Shortys 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 Installation b What is the likelihood that fewer than eight installations took more than 30 minutes (Round z score computation to 2 decimal places and your final answer to 4 decimal places ) Likelihood c What is the likelihood that eight or fewer installations took more than 30 minutes (Round z score computation to 2 decimal places and your final answer to 4 decimal places ) Likelihood d What is the likelihood that exactly 8 of the 50 installations took more than 30 minutes (Round z score computation to 2 decimal places and your final answer to 4 decimal places ) Likelihood

The Answer is in the image, click to view ...

Answered step by step

Verified Expert Solution

Link Copied!

Question

1 Approved Answer

Posted on Oct 13, 2024

Shortys Muffler advertises it can install a new muffler in 30 minutes or less. However, the work standards department at corporate headquarters recently conducted a

Shortys 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?

Installation

b.	What is the likelihood that fewer than eight installations took more than 30 minutes?(Round z-score computation to 2 decimal places and your final answer to 4 decimal places.)

Likelihood

c.	What is the likelihood that eight or fewer installations took more than 30 minutes?(Round z-score computation to 2 decimal places and your final answer to 4 decimal places.)

Likelihood

d.	What is the likelihood that exactly 8 of the 50 installations took more than 30 minutes?(Round z-score computation to 2 decimal places and your final answer to 4 decimal places.)

Likelihood