Crowdly
Add to Chrome
A researcher is interested in the average time served in jail for robbery. They ...
✅ The verified answer to this question is available below. Our community-reviewed solutions help you understand the material better.
A researcher is interested in the average time served in jail for robbery. They take a sample of 400 convictions, and find the average time served is
Image failed to load
= 7.5 years, with standard deviation s = 3 years. Since the sample is so large, it is reasonable to believe that s is close to σ. A 95% confidence interval for the average time served in jail for robbery is:❌
✅
❌
❌