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Lilit [14]
3 years ago
11

According to Gallup, 58% of US Adults choose to pursue higher education solely to get a good job. Consider taking samples of 900

adults in the United States and calculating the sample proportion who pursue higher education solely to get a good job.
Assuming all conditions are met, fill in the blanks for the following about the sampling distribution for the sample proportion.
The sampling distribution for the sample proportion follows the [ Select ] ["Population Model", "Sample Model", "Random Model", "Normal Model"] . The mean of the sampling distribution is [ Select ] ["0.064", "0.0165", "900", "0.58"] . The standard deviation of the sampling distribution is [ Select ] ["0.58", "0.064", "900", "0.0165"]
Mathematics
1 answer:
katovenus [111]3 years ago
4 0

Answer:

(a) Normal model

(b)\ Mean = 0.58

(c)\ \sigma = 0.0165

Step-by-step explanation:

Given

p = 58\%

n = 900

Solving (a): The distribution type

The sample follows a normal model

Solving (b): The mean

This is calculated as:

Mean = p

So, we have:

Mean = 58\%

Express as decimal

Mean = 0.58

Solving (c): The standard deviation

This is calculated as:

\sigma = \sqrt{\frac{p(1 - p)}{n}}

So, we have:

\sigma = \sqrt{\frac{58\%(1 - 58\%)}{900}}

Express as decimals

\sigma = \sqrt{\frac{0.58(1 - 0.58)}{900}}

\sigma = \sqrt{\frac{0.58 * 0.42}{900}}

\sigma = \sqrt{\frac{0.2436}{900}}

\sigma = \sqrt{0.00027066666}

\sigma = 0.0165

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forsale [732]

Answer:

The overall expected grade point average for the semester is 3.16/3.1 or 3.2 if you round it up.

Step-by-step explanation:

To get the average, you need to add up all the numbers then divide the sum by how many numbers you added.

3.5 + 3.0 + 3.0 = 9.5

9.5 / 3 = 3.16

4 0
2 years ago
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How do I solve this math question ?
svlad2 [7]
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3 0
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18+(-4)-2/5j-4/5j+5? what is the answer
Serga [27]

Answer:

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Step-by-step explanation:

3 0
2 years ago
2. At the local park, there is an annual fair that
mafiozo [28]

Answer:

132 children and 88 adults

Step-by-step explanation:

let x represent the amount of kids and y represent the amount of adults.

since the problem says there was a total of 220 people at the fair an equation can be made

x+y=220

the problem tells that each childrens ticket was 1.5$ and each adult ticket was $4 and that a total of $550 was made that day, we can use the knowledge to make an equation:

1.5x + 4y = 550

using the equations we can make this systems of equations:

1.5x + 4y =550

x + y =220

solve the systems of equations by subracting y on both sides of th bottom equation:

x=220-y

since x is equivant to 220-y it can be substitued for x in the first equation to make this:

1.5(220-y)+4y =550

--solve for y--

y=88  - there were 88 adults

substute 88 for y in the second equation

x+88=220

--solve for x--

x=138 - there were 132 children

7 0
2 years ago
i have a $500 in my account after 4 years of investing at 2.5% per year, how much money did I start with?
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You started with $452. Hope I helped and good luck(: 
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2 years ago
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