Construct the indicated confidence interval for the population mean μ. (Round results to 3 decimal pl 1. c = 0.80.325, g 17. n = 89

Construct the indicated confidence interval for the population mean u using the t-distribution. Assume the population is normally distributed. c= 0.90, x= 13.6, s=3.0, n= 10 (Round to one decimal place as needed.)

The mayor is interested in finding a 90% confidence interval for the mean number of pounds of trash per person per week that is generated in the city. The study included 212 residents whose mean number of pounds of trash generated per person per week was 37.9 pounds and the standard deviation was 7.7 pounds. Round answers to 3 decimal places where possible. b. With 90% confidence the population mean number of pounds per person per week is between _______ and  ________ pounds. c. If many groups of 212 randomly selected members are studied, then a different confidence interval would be produced from each group. About __________ percent of these confidence intervals will contain the true population mean number of pounds of trash generated per person per week and about ____________ percent will not contain the true population mean number of pounds of trash generated per person per week.

A sample of 32 people were randomly selected from among the workers in a shoe factory. The time taken for each person to polish a finished shoe was measured. The sample mean was 3.10 minutes. Assume σ = 0.94 minutes. Construct a 90% confidence interval for the true mean time, µ, to polish a shoe. Write down which table and critical value you used. Make sure you round your interval numbers correctly and circle your answer.