Question #4

A study of the time spent shopping in a supermarket for 20 specic items showed an approximately uniform distribution between 25 minutes and 35 minutes. a. What is the probability that the shopping time will be between 28 and 32 minutes? b. What is the probability that the shopping time will be less than 31 minutes? c. What are the mean and standard deviation of the shopping time? a. The probability that the shopping time will be between 28 and 32 minutes is (Type an integer or a decimal.) b. The probability that the shopping time will be less than 31 minutes is E. (Type an integer or a decimal.) c. The mean of the given uniform distribution is p = (Type an integer or a decimal.) The standard deviation of the given uniform distribution is o- = '1. (Round to four decimal places as needed.)