## Suppose a national survey intends to identify the children experiencing physical bullying in a population of junior high school students in

Question

Suppose a national survey intends to identify the children experiencing physical bullying in a population of junior high school students in Texas. Out of a sample of 6,458, a total of 754 reported that they have experienced physical bullying. Calculate 95% confidence intervals for the proportion of the sample who have been bullied.

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5 months 2021-08-22T00:36:55+00:00 1 Answers 2 views 0

The 95% confidence intervals is (0.109, 0.125).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , we have the following confidence interval of proportions.

In which

z is the zscore that has a pvalue of .

Out of a sample of 6,458, a total of 754 reported that they have experienced physical bullying.

This means that

95% confidence level

So , z is the value of Z that has a pvalue of , so .

The lower limit of this interval is:

The upper limit of this interval is:

The 95% confidence intervals is (0.109, 0.125).