1. The amount of time a bank teller spends with each customer is normally distributed with a population mean of 3.20 minutes and standard deviation of .40 minutes. If a random sample of 16 customers is selected, what is the standard deviation o the sample mean? Possible answers: a) 3.2 minutes b) 0.40 minutes c) 0.025 minutes d) 0.1 minutes e) 8.0 minutes
2. According to the Central Limit Theorem, what will happen to the histogram of averages as n increases? Possible answers: a) It depends on the mean and standard deviation b) The histogram will begin to look more ike the original distribution c) The histogram will begin to look less like the normal curve d) Increasing n will not affect the histogram of averages e) The histogram will begin to look more like the normal curve