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Law Incorporation [45]
3 years ago
15

3. Suppose a family stability measure was administered in four public high schools to a sample of 24 students who attend the sch

ools. The scores below were obtained. Is there a difference in family stability between the four schools?
School A: 50, 50, 55, 60, 45, 55
School B: 55, 60, 65, 55, 70, 65
School C: 50, 65, 75, 55, 60, 65
School D: 70, 80, 65, 70, 75, 60
Mathematics
1 answer:
mihalych1998 [28]3 years ago
6 0
Ound your χ2 to three decimal places and round your P-value to four<span> decimal places.) 0. Ask for details; Follow · Report ... </span>Suppose<span> a </span>family stability measure<span> was </span>administered<span> in </span>four public high schools<span> to a </span>sample<span> of </span>24 students<span> who </span>attend<span> the </span>schools<span>. The </span>scores below<span> were obtained. Is there a difference in.</span>
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According to the 2010 U.S. Census, there are approximately 8 million people living in Virginia. This is 2.8 million less than 4
grandymaker [24]

Solution: We are given that the population of Virginia is 8 million.

Let x be the population of Nevada.

We are given population of Virginia is 2.8 million less than 4 times the population of Nevada.

\therefore 4x-2.8=8

      4x=8+2.8

      4x=10.8

      x=\frac{10.8}{4} =2.7

The first step is to on both sides.

add 2.8

The second step is to on both sides.

divide 4

The population of Nevada is million.

2.7

8 0
3 years ago
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If the diameter of a sphere is 1 meter, then what is its surface area? Leave your answer in terms of π= 3.14
umka21 [38]

surface area = 4 x pi x r^2

 diameter = 1 so radius = 1/2 = 0.5

4 x 3.14 x 0.5^2 = 3.14 meters^2

3 0
3 years ago
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Statiscal or non statistical????
Svetach [21]

Answer:I am pretty sure this question is statistical. :)

Step-by-step explanation:

6 0
3 years ago
A cylinder is sliced horizontally, parallel to its base, and vertically. Which of the following could represent cross sections o
Misha Larkins [42]

C- CIRCLE AND RECTANGLE!

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3 years ago
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Suppose medical records indicate that
Kay [80]

Answer:

Step-by-step explanation:

Let x be the random variable representing the the length of newborn babies (in inches). Since it is normally distributed and the population mean and population standard deviation are known, we would apply the formula,

z = (x - µ)/σ

Where

x = sample mean

µ = population mean

σ = standard deviation

From the information given,

µ = 20 inches

σ = 2.6 inches

the probability that a given infant is between 14.8 and 25.2 inches long is expressed as

P(14.8 ≤ x ≤ 25.2)

For x = 14.8,

z = (14.8 - 20)/2.6 = - 2

Looking at the normal distribution table, the probability corresponding to the z score is 0.023

For x = 25.2

z = (25.2 - 20)/2.6 = 2

Looking at the normal distribution table, the probability corresponding to the z score is 0.98

Therefore,

P(14.8 ≤ x ≤ 25.2) = 0.98 - 0.23 = 0.75

3 0
3 years ago
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