1	A normally distributed population has population mean = 80 and population standard deviation = 10. A random sample size n = 64 was taken. What is the probability that the sample meanis between 77.6 to 82.4?
2	Assume that 65% (0.65) of all registered voters vote in a US presidential election (population characteristic). A random sample of 1000registered votersis taken. What is the probability that between 63% (0.63) to 67% (0.67) in the sample voted?
3	A supermarket wants to estimate the population mean weight of watermelons of a certain type. A sample size n = 45 has sample mean= 20 pounds with sample standard deviation s = 2.2 pounds. Create a confidence interval at 90% confidence for the population mean .
4	A chain restaurant wants to estimate the population mean weight of one of their entrees. A random sample size n = 36 showed sample mean= 18 ounces with sample standard deviation s = 1.8 ounces. Create a confidence interval at 95% confidence for the population mean .
5	A manufacturer of high intensity lamps finds that the useful life of the lamps is normally distributed with population mean = 70 months and population standard deviation s = 12 months. A sample size n = 16 is taken. What is the probability that the sample meanis greater than 75 months?