Question: Working Weekends. The average time spent by construction workers who work on weekends is 7.93 hours (over a period of 2 days). Assume the distribution

Working Weekends.

The average time spent by construction workers who work on weekends is 7.93 hours (over a period of 2 days). Assume the distribution is approximately normal and has a standard deviation of 0.8 hours.

a.Find the probability that an individual who works at that trade works fewer than 8 hours on the weekend.

b.If a sample of 40 construction workers is randomly selected, find the probability that the mean of the sample will be less than 8 hours.

Solution:

a.Find the probability that an individual who works at that trade works fewer than 8 hours on the weekend.

Step 1: Draw a normal curve and shade the desired area.

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

The average time spent by construction workers who work on weekends is 7.93 hours (over 2 days). Assume the distribution is approximately normal and has a standard deviation of 0.8 hour. a. Find the...

EC Question 10: Confidence Intervals Homework . Answered . Due Dec 2nd, 11:59 PM The average time spent by construction workers who work on the weekends is 7.9 hours. Assume the distribution of...

. Find the area under the standard normal distribution curve. a) Between z = 0 and z = - 2.07 b)To the right of z = 0.23 c) Between z = -1.53 and z = -2.08 2. Find the probabilities for each, using...

1)Here is a list of exam scores for the 14 students in Prof. Winkler's chemistry course: 60 61 61 65 72 75 75 78 81 81 85 89 91 98 What is the percentile of the person whose score was 65? Select one:...

1.SCENARIO 9-2 A student claims that he can correctly identify whether a person is a business major or an agriculture major by the way the person dresses. Suppose in actuality that if someone is a...

Part one :Identify the following( Just state them) Independent and dependent variables Population of interest Study sample Data-gathering instruments Brief Critical Analysis Summary Major findings...

Independent Journal of Management & Production E-ISSN: 2236-269X ijmp@ijmp.jor.br Instituto Federal de Educao, Cincia e Tecnologia de So Paulo Brasil Gumus, Seigha; Monday Bubou, Gordon; Humphrey...

4. A work sampling study is to be performed on an office pool consisting of 10 persons to see how much time they spend on the telephone. The duration of the study is to be 22 days, seven hours per...

1 6 CHALLENGES FACING TODAYS MANAGERS ( AND WHAT TO DO ABOUT THEM ) Harry Cloke Harry Cloke October 1 3 , 2 0 2 3 L&D 1 4 Min Read There are two eternal truths: life is about change, and managing...

Managing Scope Changes Case Study Scope changes on a project can occur regardless of how well the project is planned or executed. Scope changes can be the result of something that was omitted during...

A company signs a lease on January 1, Year One, to lease a machine for eight years. Payments are $10,000 per year with the first payment made at the beginning of the year. The company has an...

Consider a $400 million pass-through MBS that has just been created (so the 'seasoning' of the pass-through is equal to 0). The underlying pool of mortgages each has a maturity of 20 years and an...

2, 5 William is employed by an accounting firm and uses his automobile in connection with his work. During the month of October 2017, he works at the office for 3 days and participates in the audit...

Joe Henry's machine shop uses 2,550 brackets during the course of a year. These brackets are purchased from a supplier 90 miles away. The following information is known about the brackets: Annual...

3. How much information do we need to collect?

2. What types of information are we collecting?

5. How quickly can we manage to collect the information?