Question

A criminologist developed a test to measure recidivism, where low scores indicated a lower probability of repeating the criminal behavior. It has an approximately normal distribution with a mean of 140 and a standard deviation of 40. (worth 12 points total

What proportion of respondents should score between 140 and 195? How would you interpret that proportion?

In terms of estimating population parameters using sample statistics, one would think that the highest level of confidence in an estimate (in other words, the 99% confidence level) would always be preferred by researchers. (worth 8 points total)

A. What is/are the advantage(s) of reporting a confidence interval at the 99% confidence level?

B. Explain why researchers might rather choose a lower level of confidence (say the 95% or 90% confidence level) in their estimation of confidence intervals.

Answer 1

Solution:

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