Textbook problem 3.10: A recent General Social Survey asked "How many people at your workplace are close friends?" The 756 responses had a mean of 2.76, standard deviation of 3.65, anda mode of 0. Would the Poisson distribution fit these data well? Why or why not?

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