Probability distribution | Mathematics homework help


BUS210 Business Statistics

Directions:  Answer the aftercited applications. Please exhibition all of your employment for each application.

 

Complete and yield the aftercited problems from your text:

            Chapter 6:   Exercises #14 and #46  

            Chapter 7:   Exercises #10, #38 and #52

Chapter 6

 

14.   The United States Postal Service recitals 95 percent of pristine collocate mail among the selfselfsame city is delivered among two days of the interval of mailing. Six scholarship are randomly sent to opposed locations.

a.       What is the chance that all six procure come-to among two days?

b.      What is the chance that precisely five come-to among two days?

c.       Find the medium estimate of scholarship that procure come-to among two days.

d.      Compute the hostility and exemplar inconsequence of the estimate that procure come-to among two days.

 

46. Dr. Richmond, a psychologist, is examineing the dayinterval television viewing conduct of academy students. She believes 45 percent of academy students observe soap operas during the afternoon. To advance brave, she selects a case of 10.

a.   Develop a chance division for the estimate of students in the case who observe soap operas.

b.   Find the medium and the exemplar inconsequence of this division.

c.   What is the chance of opinion precisely filthy observe soap operas?

d.   What is the chance close than half of the students clarified observe soap operas?

 

Chapter 7

 

10. The medium of a typical chance division is 60; the exemplar inconsequence is 5.

a.   About what percent of the observations lie betwixt 55 and 65?

b.   About what percent of the observations lie betwixt 50 and 70?

c.   About what percent of the observations lie betwixt 45 and 75?

38. A examine of hanker absence phone calls made from the urbane offices of Pepsi Bottling Group, Inc., in Somers, New York, biblical the tediousness of the calls, in minutes, follows the typical chance division. The medium tediousness of interval per call was 4.2 minutes and the exemplar inconsequence was 0.60 minutes.

a.   What interest of the calls terminal betwixt 4.2 and 5 minutes?

b.   What interest of the calls terminal past than 5 minutes?

c.    What interest of the calls terminal betwixt 5 and 6 minutes?

d.    What interest of the calls terminal betwixt 4 and 6 minutes?

e.    As allot of her recital to the moderator, the leader communications would enjoy to recital the tediousness of the hankerest (in space) 4 percent of the calls. What is this interval?

 

 

 

This is the end of Assignment 4.