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An SRS of 85 students is taken from a large university by a car manufacturer to...

An SRS of 85 students is taken from a large university by a car manufacturer to estimate the proportion of students whose parents bought them a car when they left for college. When interviewed, 51 students in the sample responded their parents did not buy them a car when they left for college. Show all work.

a) What is the standard error for a 90% confidence interval?

b) What is the margin of error for a 90% confidence interval?

c) What is the 90% confidence interval?

Math   Statistics-And-Probability   
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