# Question: Shorty s Muffler advertises it can install a new muffler in

Shorty’s Muffler advertises it can install a new muffler in 30 minutes or less. However, the work standards department at corporate headquarters recently conducted a study and found that 20% of the mufflers were not installed in 30 minutes or less. The Maumee branch installed 50 mufflers last month. If the corporate report is correct:

a. How many of the installations at the Maumee branch would you expect to take more than 30 minutes?

b. What is the likelihood that fewer than eight installations took more than 30 minutes?

c. What is the likelihood that eight or fewer installations took more than 30 minutes?

d. What is the likelihood that exactly 8 of the 50 installations took more than 30 minutes?

a. How many of the installations at the Maumee branch would you expect to take more than 30 minutes?

b. What is the likelihood that fewer than eight installations took more than 30 minutes?

c. What is the likelihood that eight or fewer installations took more than 30 minutes?

d. What is the likelihood that exactly 8 of the 50 installations took more than 30 minutes?

## Answer to relevant Questions

A study conducted by the nationally known Taurus Health Club revealed that 30% of its new members are 15 pounds overweight. A membership drive in a metropolitan area resulted in 500 new members.a. It has been suggested that ...The cost per item at a supermarket follows an exponential distribution. There are many inexpensive items and a few relatively expensive ones. The mean cost per item is $3.50. What is the percentage of items that cost:a. ...A recent report indicated a typical family of four spends $490 per month on food. Assume the distribution of food expenditures for a family of four follows the normal distribution, with a standard deviation of $90 per ...A recent news report indicated that 20% of all employees steal from their company each year. If a company employs 50 people, what is the probability that:a. Fewer than five employees steal?b. More than five employees ...Most four-year automobile leases allow up to 60,000 miles. If the lessee goes beyond this amount, a penalty of 20 cents per mile is added to the lease cost. Suppose the distribution of miles driven on four-year leases ...Post your question