Question: this is for practice, it has three parts that I need help with. Thank you in advance!! Use the given confidence interval to find the

this is for practice, it has three parts that I need help with. Thank you in advance!!

with. Thank you in advance!! Use the given confidence interval to find

Use the given confidence interval to find the margin of error and the sample mean. (13.4,22.8) The sample mean is (Type an integer or a decimal.)Use the given confidence interval to find the margin of error and the sample mean. (7.08, 10.02) The sample mean is (Type an integer or a decimal.)In a random sample of 22 people, the mean commute time to work was 30.3 minutes and the standard deviation was 7.3 minutes. Assume the population is normally distributed and use a tdistribution to construct a 90% condence interval for the population mean u. What is the margin of error of u? Interpret the results. The condence interval for the population mean u is (D,D) . (Round to one decimal place as needed.)

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