In a sample of 22 iPhones, 9 had over 82 apps downloaded. Construct a 90% confidence interval for the population proportion of all iPhones that obtain over 82 apps. Assume $z_{0.05} = 1.645$. Multiple Choice 0.41 ± 0.17 0.41 ± 0.08 0.26 ± 0.16 0.26 ± 0.17
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This is done by dividing the number of iPhones with over 82 apps (9) by the total number of iPhones in the sample (22). So, p̂ = 9/22 = 0.41. Show more…
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