A) Use a confidence level of 90%, to find the positive critical value for a confidence interval to estimate a population mean when the population standard deviation is known.

B) Use a confidence level of 94%, to find the positive critical value for a confidence interval to estimate a population mean when the population standard deviation is known.

C) You intend to estimate a population mean with a confidence interval. You believe the population to have a normal distribution. Your sample size is 17. Find the critical value that corresponds to a confidence level of 90%. (Report answer accurate to three decimal places with appropriate rounding.)

D) You intend to estimate a population mean with a confidence interval. You believe the population to have a normal distribution. Your sample size is 6. While it is an uncommon confidence level, find the critical value that corresponds to a confidence level of 87.6%. (Report answer accurate to three decimal places with appropriate rounding.)

E) For a confidence level of 90% with a sample size of 22, find the critical t value.

F)If n=17,X (x-bar)=35, and s=10, find the margin of error at a 99% confidence level Give your answer to two decimal places

G) You measure 23 dogs' weights, and find they have a mean weight of 34 ounces. Assume the population standard deviation is 12.6 ounces. Based on this, what is the maximal margin of error associated with a 99% confidence interval for the true population mean dog weight. Give your answer as a decimal, to two places