The hypothesis are given as follows:
H0: p = 0.301; H1: p ≠ 0.301.
a) The level of significance is of 0.05.
b) The sampling distribution is given by: The standard normal, since np > 5 and nq > 5.
The test statistic is of: z = -2.09.
c) The p-value is of: 0.0366.
What are the hypothesis tested?At the null hypothesis, it is tested if there is not enough evidence to conclude that the proportion has changed, hence:
[tex]H_0: p = 0.301[/tex]
At the alternative hypothesis, it is tested if there is enough evidence to conclude that the proportion has changed, hence:
[tex]H_1: p \neq 0.301[/tex]
What is the test statistic?The test statistic is given by the equation presented as follows:
[tex]z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}[/tex]
The parameters of the equation are listed as follows:
[tex]\overline{p}[/tex] is the sample proportion.p is the proportion tested at the null hypothesis.n is the sample size.The values of these parameters for this test are:
[tex]\overline{p} = \frac{52}{220} = 0.2364, p = 0.301, n = 220[/tex]
Hence the value of the test statistic is of:
[tex]z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}[/tex]
[tex]z = \frac{0.2364 - 0.301}{\sqrt{\frac{0.301(0.699)}{220}}}[/tex]
z = -2.09.
What is the p-value?We have a two-tailed test, as we are testing if the proportion is different of a value.
Hence, using a z-distribution calculator, with z = -2.09, the p-value is of 0.0366.
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Fill in the missing term on each line. Simplify any fractions.
3(9w+ 2) = 19w + 6
_+ 6 = 19w + 6 Apply the distributive property
_+6=6
8w =_
W =_
Subtract 19w from both sides
Subtract 6 from both sides
Divide both sides by 8
Answer:
27w+2=19w+6
27w+19w=6+2
w(27+19)=8
w(27+19)/27+19=8/27+19
w=8/(27+19)
3) On a large ship, there are 230 mice and rats (combined) each of which either prefers peanut
butter or cheese. Of the 110 mice, 42 prefer peanut butter and 44 rats prefer cheese. What
percent of all rodents on the ship preferred peanut butter? (2 pts) (Mice and rats are both
rodents.)
48.4 % percent of all rodents on the ship preferred peanut butter.
What is unitary method?The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units. What can be values and units.Let's say you go to the store to buy six apples. You are informed by the shopkeeper that he is offering 10 apples for Rs 100. In this instance, the value and the units are the price of the apples.Recognizing the units and values is crucial when using the unitary technique to a problem.Always write the items that need to be computed on the right side and the things that are known on the left side to simplify things. We are aware of the quantity of apples and the amount of money in the aforesaid problem.acc to our question-
total number of rodents = 230110 mice in which 42 prefer peanut better,110 * 44= 48.4hence,48.4 % percent of all rodents on the ship preferred peanut butter.
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Translate each phrase into a variable expression. Use n for the variable.
Nine increased by twice a number
The expression of the phrase " Nine increased by twice a number " is 2n + 9
The given phrase is
Nine increased by twice a number
We have to convert the the phrase to the expression
The expression is the mathematical statement that consist of different variables, numbers and mathematical operators. The mathematical operators are addition, subtraction, division and multiplication. The equal sign and inequality will not be the part of expression.
Consider the number as n
Twice the number = 2n
nine increased by twice a number = 2n + 9
Hence, the expression of the phrase " Nine increased by twice a number " is 2n + 9
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Examine the worked examples. Then, answer the questions.
Alessa's car uses 2 gallons of gas to drive 45 miles.How many miles can
Alessa's car drive using 15 gallons of
Answer:
Alessa's car would be able to drive 337.5 miles with 15 gallons of gas.
Need help solving this problem 35)210.35
Answer: The answer is 0.16638935108
Step-by-step explanation:
if a volume of an object varies directly with its width and if the volume is 16, while the with is 4 what is k?
The value of k is 4.
What is Proportion ?In general, the term "proportion" refers to a part, share, or amount that is compared to a total.
According to the concept of proportion, two ratios are in proportion when they are equal. Two ratios or fractions are equal when an equation or a declaration to that effect is utilised.
A mathematical comparison of two numbers is called a proportion. According to proportion, two sets of provided numbers are said to be directly proportional to one another if they increase or decrease in the same ratio. "::" or "=" are symbols used to indicate proportions.
Given:
Volume= 16
Width = 4
So, we can write the relation as
Volume= k (width)
k = Volume/ width
k= 16/4
k = 4
Hence, the value of k is 4.
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can anyone help with this
Answer:
bla blablablablabla
Step-by-step explanation:
blablablablablabla
Note one gallon of water equals 231 cubic inches. If Anna is going to clean the fish tank which measures 48 inches long by 11 inches wide by 35 inches high, how many gallons of water will it take to fill the fish tank?
If any one sees this question please help me answer it because I am having a lot of trouble.
It will take 80 gallons of water to fill the fish tank.
What is volume?The amount of space occupied by a three-dimensional object or region of space.
Given that, Anna is going to clean the fish tank, which measures 48 inches long by 11 inches wide by 35 inches high
The fish tank is cuboidal,
Volume of cuboid = length*width*height
Therefore, volume of fish tank = 48*11*35 = 18,480 in³
1 gallon = 231 in³
So, 18,480 in³ = 18,480/231 gallons = 80 gallons
Hence, Volume of tank = 80 gallons
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An earthworm accelerates from a speed of 0.01 m/s to 0.02 m/s over a distance of 0.9 m. How long did it take?
By using the formula of acceleration, it can be calculated that
Time taken by an earthworm to accelerate from a speed of 0.01 m/s to 0.02 m/s over a distance of 0.9 m is 59.88 s
What is acceleration?
At first, it is important to know about velocity
Distance travelled by a body per unit interval of time in a particular direction is called Velocity
The rate of change of velocity is called acceleration.
Acceleration is a vector quantity as the direction is taken into account.
Initial velocity of earthworm (u)= 0.01 m/s
Final velocity of earthworm (v) = 0.02 m/s
Distance (s) = 0.9 m
We know,
[tex]v^2 = u^2 + 2as\\0.02^2 = 0.01^2 + 2 \times a \times 0.9\\0.02^2 - 0.01^2 = 1.8a\\(0.02 + 0.01)(0.02 - 0.01) = 1.8a\\a = \frac{0.03 \times 0.01}{1.8}\\a = 0.000167 \ ms^{-2}[/tex]
Again,
v = u + at
0.02 = 0.01 + 0.000167[tex]\times[/tex] t
t = [tex]\frac{0.02 - 0.01}{0.000167}[/tex]
t = 59.88 s
Time taken by an earthworm to accelerate from a speed of 0.01 m/s to 0.02 m/s over a distance of 0.9 m is 59.88 s
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Willy is an avid fisherman of the world. As he travels, he goes fishing 2 times on every mainland Country he visits and goes fishing 5 times on every Island he visits.
As far as he remembers, Willy went fishing 65 times in the total of the 25 unique Countries and Islands he visited.
How many Countries and Islands did Willy visit? (Where and represent the countries and islands)
The number of mainland countries is 20 and the number of island countries is 5 countries that Willy visited.
How to calculate the value?Let the number of mainland be represented by m
Let the number of island be represented by x.
This will be illustrated as:.
m + x = 25 .... i
2m + 5x = 65 .... ii
From equation i, m = 25 - x.
Put this into equation ii
2m + 5x = 65
2(25 - x) + 5x = 65
50 - 2x + 5x = 65
3x = 65 - 50
3x = 15
Divide
x = 15 / 3
x = 5
Island countries = 5
Since m + x = 25
m = 25 - 5 = 20
Mainland countries = 20
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Can anyone help me with this, I need an accurate answer also if possible. -thanks
Answer:
y=x-7
Step-by-step explanation:
we know the y intercept is -7 since when x was 0 g(x) is -7
We write it in slope intercept form which is y=mx+b
m- slope
b- y- intercept
To find slope we do y2-y1/x2-x1
-5+7/2-0
2/2
1
1 is the slope so we just keep it X on the equation and the equation will be
y=x-7
Hopes this helps please mark brainliest
Convert the expression (10) 1/3 to radical form.
Answer:
cubic root 10 power 1
Step-by-step explanation:
Apply the rule
x
m
n
=
n
√
x
m
to rewrite the exponentiation as a radical.
3
√
10
1
Anything raised to
1
is the base itself.
3
√
10
The result can be shown in multiple forms.
Exact Form:
3
√
10
Decimal Form:
2.15443469
…
If each standard room cdn fill 2 guests what is the maximum number of guests that all standard rooms can accommodate
The maximum number of guests that can fill all the standard rooms is twice the number of the standard rooms
How to find the number of guests that can fill the standard roomsInformation from the question
each standard room can fill 2 guests
the maximum number of guests that all standard rooms can accommodate = ?
The problem is solved by multiplication
each standard room (1) = 2 guests
all standard rooms = ?
cross multiplying
? * 1 = 2 * all standard rooms
? = all standard rooms times two
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Find the first term and the common difference of the arithmetic sequence described. Give a recursive formula for the sequence. Find a formula for the nth term. 5 th term is 0; 45 th term is -120
The first term of the sequence is 12 and the common difference is -3.
What is arithmetic progression?The sequence in which every next number is the addition of the constant quantity in the series is termed the arithmetic progression.
Given that a formula for the nth term. 5th term is 0; 45th term is -120. The common difference is calculated as,
a₁ + d(5-1) = 0
a₁ + d(45 - 1) = -120
Solve the above equation,
a₁ + 4d = 0
-a₁ - 44d= +120
___________
-40d = 120
d = -3
The value of the first term is,
a₁ + 4d = 0
a₁ + 4 x -3 = 0
a₁ = 12
Therefore, the first term of the sequence is 12 and the common difference is -3.
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Plot the following numbers on the number line: -3 1/2 1 3/4
A number line which shows -3, 1/2, 3/4, and 1 correctly plotted on a graph is shown in the image attached below.
What is a number line?In Mathematics, a number line can be defined as a type of graph with a graduated straight line which comprises both positive and negative numbers that are placed at equal intervals along its length.
This ultimately implies that, a number line primarily increases in numerical value towards the right from zero (0) and decreases in numerical value towards the left from zero (0). Therefore, the numerical value -3 would be plotted on the left hand side of zero (0) while the numerical values 1/2, 3/4, and 1 would be plotted on the right hand side of zero (0) using a number line.
In conclusion, a number line has been used for the comparison of the given numerical values, and they are plotted on the number line shown in the image attached below.
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Find which are the errors and solve correctly the problem:
Answer:
[tex]f^{-1}(y) = \sqrt{x-5}[/tex]
Step-by-step explanation:
You have to switch the f(x) to x and the x's to y's
[tex]x = y^2 + 5[/tex]
[tex]\sqrt{x-5} = \sqrt{y^2}[/tex]
[tex]y = \sqrt{x - 5}[/tex]
Donna used a total of 2 1/6 gallons of gas while driving her car. Each hour she was driving, she used 7/10 gallons of gas. What was the total number of hours she was driving?
The total number of hours Donna used driving is 3 2/21 hours
What is rate?A rate is a special ratio in which the two terms are in different units. For example, For 1 hour Donna is using 7/10 gallons of fuel while driving.
The two quantities there are time in hours and the quantity of fuel used in gallons.
If Donna used 7/10 gallon for 1 hour
then 1 gallon will last for 1÷7/10= 1× 10/7= 10/7
Therefore for 2 1/6 gallon = 10/7×2 1/6= 10/7×13/6
= 3 2/21 hours
Therefore the total number of hours used driving with 2 1/6 gallons is 3 2/21
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Simplify the fraction
Answer:
Step-by-step explanation:
please help write the reasons that are needed to complete the proof in the picture
Answer:
a. Given
b. thru any 2 points there exists a line (you can draw a line)
c. Definition of Regular Polygon
d. Definition of Regular Polygon
e. Given
f. Def of Midpoint
g. SAS: Side-Angle-Side congruence
h. CPCTC - Corresponding Parts of Congruent Triangles are Congruent
i. Definition of Regular Polygon
j. Reflexive
k. SSS: Side-Side-Side congruence
l. CPCTC
Step-by-step explanation:
I encourage you to look up all of the above reasons to get a better understanding of what they are!!
The quotient of a number and -4 is -20. Find the number
Answer:
80
Step-by-step explanation:
x/ -4 = -20
I hope this helps!
quotient of 2÷ 3/7 iready
Answer:
6/7
Step-by-step explanation:
2÷3/7=2*3/7
6/7
Assume z is a standard normal random variable. Then P(–1.20 ≤ z ≤ 1.50) equals
When is a standard normal random variable, the probability of P(–1.20 ≤ z ≤ 1.50) is 0.8181.
What is the probability?The probability illustrates the likelihood of events.
From the information, it's important to note that P(–1.20 ≤ z ≤ 1.50) will be:
= P(Z ≤ 1.50) - P(Z ≤ -1.20)
= P(Z ≤ 1.50) - [1 - P(Z ≤ -1.20)]
It should be noted that by using the normal z table, the probability of the corresponding z score will be 0.9332 and 0.8849.
This will be:
= 0.9332 - (1 - 0.8849)
= 0.8181
Therefore, the probability is 0.8181.
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Solve using substitution.
x = –3
–3x − y = 2
Answer:
y=7
Step-by-step explanation:
-3(-3)-y=2
9-y=2
9-2=y
y=7
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Which addition equation matches the number line help help
Please help with answers
The value of x is 11° and measure of other two angles are 80° and 117°
What is triangle?A triangle can be defined as a polygon which has three angles and three sides. The interior angles of a triangle sum up to 180°, and the exterior angles sum up to 360°.
Given that, the interior angles of the triangle are 37° and (3x+47)° and an exterior angle measures (5x+ 62)°
We know that the sum of two interior angles equals to the measure of an exterior angle,
Therefore, 37° + (3x+47)° = (5x+ 62)°
x = 11°
Hence, The value of x is 11° and measure of other two angles are 80° and 117°
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Solve. 4h+8=9h-7 step by step
Answer:
h=3
Step-by-step explanation:
4h+8=9h-7
subtract 4h
8=5h-7
add 7
15=5h
divide 3
h=3
Find the area of the shaded region. Round your answer to two decimal places.
The area of the shaded region is x=245 feet for both rectangle and circle.
What is meant by area?The quantity area expresses the extent of a region on a plane or a curved surface. The area of a plane region or plane area refers to the area of a form or planar lamina, whereas surface area refers to the area of an open surface or the boundary of a three-dimensional object. Area can be defined as the amount of material of a given thickness required to make a model of the shape, or the amount of paint required to cover the surface with a single coat. It is the two-dimensional equivalent of the length of a curve or the volume of a solid.
The area of a shape can be calculated.
Area of shaded region=Area of rectangle-1/2(Area of circle)
=L×B-1/2(πr²)
=23×14-1/2((22/7)×7×7)
=322-77
=245 feet
Therefore, the area of the shaded region=245 feet
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Simplify the expressions
a) (30+10 ÷ 2)-5-10
b) (30 + 10) = 2.5-10
c) 30 + 10 = 2(5-10)
(d) 30+ (10 ÷ 2·5)-10
The solution of the expressions are
(a) (30+10 ÷ 2)-5-10 = 20
(d) 30+ (10 ÷ 2·5)-10 = 24
What is meaning of expressions?
An expression is a combination of operations, variables, and numbers.
What is BODMAS rule?
According to the BODMAS rule, if an expression contains brackets ((), {}, []) we have first to solve or simplify the bracket followed by 'order' (that means powers and roots, etc.), then division, multiplication, addition and subtraction from left to right.
Given expression is
(30+10 ÷ 2)-5-10
Applying BODMAS rule:
= (30 + 5) - 5 - 10
= 35 - 5 - 10
= 30 - 10
=40
Second expression is:
30+ (10 ÷ 2·5)-10
= 30 + (10 ÷ 10) - 10
= 30 + 1 - 10
= 31 -10
= 21
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marie bought 1/2 gallon of milk which she finished after 6 days if she drank the same amounteach day how many gallons a day did she drink
She drinks 1/12 gallons of milk each day
How to determine how many gallons a day did she drink?From the question, we have the following parameters that can be used in our computation:
Size of milk = 1/2 gallons
Number of days = 6 days
These parameters can be represented as
(x, y) = (6, 1/2)
The number of gallons a day she drinks can then be represented as the slope/unit rate and the unit rate is then calculated as
unit rate = (y₂ - y₁)/(x₂ - x₁)
Where
(x, y) = (0, 0) and (6, 1/2)
Substitute the known values in the above equation
So, we have the following equation
Slope = (1/2 - 0)/(6 - 0)
Evaluate the quotient
Slope = 1/12
Hence, the number of gallons she drinks a day is 1/12
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Let's multiply the top equation by -2. What would be our new equation?
2x + 3y = 12
4x - 7y = -54
New equation will be 4x + 6y = 24, if we multiply the equation 2x + 3y = 12 by -2.
Define multiplication.We can rapidly determine the total number of things by multiplying. When multiplying, we'll consider the number of groups with similar sizes and the number of items in each group. A fact involving multiplication is the result of two distinct integers. Additionally, the product is unaffected by the arrangement of the numbers. For instance, 32=6 and 23=6. The distributive, commutative, associative, removes a common factor, and neutral element characteristics of multiplication.
Given,
Equations:
2x + 3y = 12
4x - 7y = -54
Multiplying the top equation by -2:
-2(2x + 3y) = -2(12)
-2(2x) -2(3y) = -24
Product:
-4x - 6y = -24
Taking - common,
-(4x + 6y) = -24
4x + 6y = 24
New equation will be 4x + 6y = 24, if we multiply the equation 2x + 3y = 12 by -2.
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