Question

Asked Nov 21, 2019

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Assume that a sample is used to estimate a population proportion *p*. Find the 80% confidence interval for a sample of size 242 with 11% successes. Enter your answer as an **open-interval** (*i.e.*, parentheses) using decimals (not percents) accurate to three decimal places.

C.I. =

Step 1

The sample proportion is 0.11.

The sample size is 242.

Consider the confidence interval as 80%, the two-tailed *z* value at 0.20 level of s...

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