Mathematics, 30.07.2021 19:30 Goldenstate32
A simple random sample of 49 8th graders at a large suburban middle school indicated that 88% of them are involved with some type of after school activity. Find the margin of error associated with a 90% confidence interval that estimates the proportion of them that are involved in an after school activity.
Answers: 1
, and a confidence level of 
, we have the following confidence interval of proportions.
.
, z is the value of Z that has a p-value of 
, so 
.
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A simple random sample of 49 8th graders at a large suburban middle school indicated that 88% of the...
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