Lois and clark own a company that sells wagons the amount they pay each other of their sales employees in dollars is given by the expression 12h+30w where h is the number of hours worked and w is what the number of wagons sold what is the amount paid to an employee that works 6 hours and sells 3 wagons

Arandom sample of 45 observations results in a sample mean of 68. the population standard deviation is known to be 23 a. compute the margin of error at a 959% confidence interval. b. compute the 95% confidence interval for the population mean c. compute the 90% confidence interval for the population mean. d. compute the 75% confidence interval for the population mean