# Question: A company that has a large number of supermarket grocery

A company that has a large number of supermarket grocery stores claims that customers who pay by personal checks spend an average of $87 on groceries at these stores with a standard deviation of $22. Assume that the expenses incurred on groceries by all such customers at these stores are normally distributed.

a. Find the probability that a randomly selected customer who pays by check spends more than $114 on groceries.

b. What percentage of customers paying by check spends between $40 and $60 on groceries?

c. What percentage of customers paying by check spends between $70 and $105?

d. Is it possible for a customer paying by check to spend more than $185? Explain.

a. Find the probability that a randomly selected customer who pays by check spends more than $114 on groceries.

b. What percentage of customers paying by check spends between $40 and $60 on groceries?

c. What percentage of customers paying by check spends between $70 and $105?

d. Is it possible for a customer paying by check to spend more than $185? Explain.

## Relevant Questions

At Jen and Perry Ice Cream Company, the machine that fills 1-pound cartons of Top Flavor ice cream is set to dispense 16 ounces of ice cream into every carton. However, some cartons contain slightly less than and some ...According to an article on Yahoo.com on February 19, 2012, the average salary of actuaries in the U.S. is $98,620 a year (http://education.yahoo.net/articles/careers_for_shy_people_2.htm?kid=1KWO3). Suppose that currently ...Otto is trying out for the javelin throw to compete in the Olympics. The lengths of his javelin throws are normally distributed with a mean of 253 feet and a standard deviation of 8.4 feet. What is the probability that the ...Find the value of z for the standard normal curve such that the area a. In the left tail is .1000 b. Between 0 and z is .2291 and z is positive c. In the right tail is .0500 d. Between 0 and z is .3571 and z is negative According to a Pew Research Center nationwide telephone survey of American adults conducted by phone between March 15 and April 24, 2011, 25% of American college graduates said that their student loans make it harder for ...Post your question