A criminologist rode along with patrol officers for several weeks and recorded the number of minutes police officers spe
Posted: Sun Jul 10, 2022 10:23 am
A criminologist rode along with patrol officers for severalweeks and recorded the number of minutes police officers spentinterviewing witness at a variety of crime scenes. Using datacollected on a group of 49 patrol officers, she observes an averageinterviewing time of 12 minutes. Assume that the populationstandard deviation σ is estimated to be 6 minutes.
(a) What is the best point estimate for the population mean
(b) What is the critical z-value that will need to be used tocalculate a 99 % confidence interval?
(c) What is the error
(d) What is the 99 % confidence interval?
(e) Intrepret your result.
We are 99% confident that the sample mean interviewing timefalls in this confidence interval.
We are confident that 99% of the possible mean amounts ofinterviewing times fall in this confidence interval.
We are 99% confident that the true mean interviewing time fallsin this confidence interval.
The confidence interval contains the true mean interviewing timewith an error of 99%
None of the above.
(a) What is the best point estimate for the population mean
(b) What is the critical z-value that will need to be used tocalculate a 99 % confidence interval?
(c) What is the error
(d) What is the 99 % confidence interval?
(e) Intrepret your result.
We are 99% confident that the sample mean interviewing timefalls in this confidence interval.
We are confident that 99% of the possible mean amounts ofinterviewing times fall in this confidence interval.
We are 99% confident that the true mean interviewing time fallsin this confidence interval.
The confidence interval contains the true mean interviewing timewith an error of 99%
None of the above.