1.For a 98% confidence interval for a population parameter, e.g., the population mean, of all possible confidence intervals, how many will contain the true parameter value? Enter with 2 decimal places.

2.For a sample proportion 0.200 and sample size 44, what is the standard error of the distribution of sample proportions? Enter with 3 decimal places.

3.To compute a confidence interval for the mean, population standard deviation unknown, n=35, and alpha=0.01, enter the critical value with 3 decimal places.

4.To compute a confidence interval for the mean, population standard deviation unknown, n=25, and alpha=0.10, enter the critical value with 3 decimal places.

5.As the sample size decreases, confidence interval width?

6.As the sample size increase, the margin of error?

7.A sample of 10 widgets has a mean of 27.100 and standard deviation of 5.400. At 90% confidence, the lower limit with 3 decimal places is?

8.A sample of 18 widgets has a mean of 30.750 and standard deviation of 5.000. At 99% confidence, the upper limit with 3 decimal places is?

9.A statistics course has 20 students in which 74% passed. At 95% confidence, the upper confidence limit for the proportion students passing with 3 decimal places is?

10.A statistics course has 22 student in which 85.0% passes. At 90% confidence, the lower confidence limit for the proportion students passing with 3 decimal places is?