(a) A 95% confidence interval for the mean of a population is computed from a random sample and found to 104. We may conclude

A. 95% of the population is between 6 and 14.

B. that there is a 95% probability that the true mean is 10 and a 95% chance the true margin of error is 4.

C.that there is a 95% probability that is between 6 and 14.

D.that if we took many, many additional samples and from each computed a 95% confidence interval for, approximately 95% of these intervals would contain

.

E. All of the above.

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(b)Suppose you collect a SRS of sizenfrom a population and from the data collected you computed a 95% confidence interval for the mean of the population. Which of the following would produce a new confidence interval with larger width (larger margin of error) based on these same data?

A.Use a larger confidence level.

B.Nothing can guarantee absolutely that you will get a larger interval. One can only say the chance of obtaining a larger interval is 0.05.

C.Use a smaller confidence level.

D.Use the same confidence level, but compute the intervalntimes. Approximately 5% of these intervals will be larger.

E.None of the above.

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