Suppose a large labor union wishes to estimate the mean number of hours per month a union member is absent from work. the union decides to sample 100 of its members at random and monitor their working time for 1 month. at the end of the month, the total number of hours absent from work is recorded for each employee. if the mean and standard deviation of the sample are 13 hours and 9 hours, respectively, find a 95% confidence interval for the true mean number of hours absent per month per employee. round your answer to four decimal places.

Now ray has had the tires for two months and he notices that the tread has started to pull away from the tire. he has already contacted the place who sold the tires and calmly and accurately explained the problem. they didn’t him because they no longer carry that tire. so he talked with the manager and he still did not get the tire replaced. his consumer rights are being violated. pretend you are ray and write a letter to the company’s headquarters. here are some points to keep in mind when writing the letter: include your name, address, and account number, if appropriate. describe your purchase (name of product, serial numbers, date and location of purchase). state the problem and give the history of how you tried to resolve the problem. ask for a specific action. include how you can be reached.