WEEK 7: QUIZ

Question: (CO 4) From a random sample of 55 businesses, it is found that the mean time that employees spend on personal issues each week is 4.9 hours with a standard deviation of 0.35 hours. What is the 95% confidence interval for the amount of time spent on personal issues? Question: (CO 4) If a confidence interval is given from 8.56 to 10.19 and the mean is known to … 9.375, what is the margin of error? Question: (CO 4) If the population standard deviation of a sample increases without other...