Author Question: A salesman who uses his car extensively finds that his gasoline bills average 125.32 per month with ... (Read 93 times)

torybrooks · **on:** Jun 24, 2018

A salesman who uses his car extensively finds that his gasoline bills average 125.32 per month with a standard deviation of 49.51 . The probability that his bill will be less than 50 a month or more than 150 for a single month is:
a. 0.4357.
b. 0.1915.
c. 0.6272.
d. 0.3728.
e. 0.6915.

Question 2

True or False If a population is a Poisson distribution with a mean of 4, then the sampling distribution of the mean for 200 Excel or Minitab simulated samples approaches the normal distribution as the sample sizes are 5 or more.
Indicate whether the statement is true or false