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3 years ago

7

How to find the mean and standard deviation of the sampling distribution of the sample proportion when a random sample of 100 pe

ople were chosen based on a study at 76% of Americans believe

1 answer:

grigory [225]3 years ago

7 0

Answer:

bvcxz

Step-by-step explanation:

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3 years ago

A sample of 100 janitors in a certain school district found that the average time each janitor had worked for the school distric

Crank

First, we get the standard error of the mean using
σm = σ / √N
= 5 / √100
= 0.5

Next, we subtract and add 1.96 standard deviations from the mean (since the confidence interval is 95%). So,
8 ±1.96 (0.5)
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The answer is
</span>E) 8±0.98

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