If we decrease the confidence level, the width of the confidence interval will: (1) increase (2) remain unchanged (3) decrease (4) double (5) none of the above In the t test for a mean, the level of...

If we decrease the confidence level, the width of the confidence interval will:

(1) increase

(2) remain unchanged

(3) decrease

(4) double

(5) none of the above

In the t test for a mean, the level of significance increases if the population standard deviation increases, holding the sample size constant.