Dr Nick

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About Dr Nick

Levels Tought:
Elementary,Middle School,High School,College,University,PHD

Expertise:
Art & Design,Computer Science See all
Art & Design,Computer Science,Engineering,Information Systems,Programming Hide all
Teaching Since: May 2017
Last Sign in: 339 Weeks Ago, 5 Days Ago
Questions Answered: 19234
Tutorials Posted: 19224

Education

  • MBA (IT), PHD
    Kaplan University
    Apr-2009 - Mar-2014

Experience

  • Professor
    University of Santo Tomas
    Aug-2006 - Present

Category > Statistics Posted 10 Nov 2017 My Price 13.00

an electronic copy of your answer before submitting itto Ashworth College for grading

MA260Statistical Analysis I

Directions: Besure to save an electronic copy of your answer before submitting itto Ashworth College for grading. Unless otherwise stated, answer incomplete sentences, and be sure to use correct English, spelling, andgrammar. Refer to the "Assignment Format" page located onthe Course Home page for specific format requirements.

NOTE: Show your work in theproblems.

1. A recent article in the Myrtle Beach Sun Times reportedthat the mean labor cost to repair a color television is $90 with astandard deviation of $22. Monte’s TV Sales and Service completedrepairs on two sets this morning. The labor cost for the first was$75 and it was $100 for the second. Compute z valuesfor each and comment on your findings.

2. The mean of a normal distribution is 400 pounds. The standarddeviation is 10 pounds.

a. What is the area between 415 pounds and the mean?

b. What is the area between the mean and 395 pounds?

c. What is the probability of selecting a value at random anddiscovering that it has a value of less than 395 pounds?

3. The monthly sales of mufflers in the Richmond, VA area follow thenormal distribution with a mean of 1200 and a standard deviation of225. The manufacturer would like to establish inventory levels suchthat there is only a 5% chance of running out of stock. Where shouldthe manufacturer set the inventory levels?

4. Research on new juvenile delinquents revealed that 38% of themcommitted another crime.

a. What is the probability that of the last 100 new juveniledelinquents put on probation, 30 or more will commit another crime?

b. What is the probability that 40 or fewer of the delinquents willcommit another crime?

c. What is the probability that between 30 and 40 of the delinquentswill commit another crime?

5. An Air Force study indicates that the probability of a disastersuch as the January 28, 1986 explosion of the space shuttleChallenger was 1 in 35. The Challenger flight was the25th mission.

a. How many disasters would you expect in the first 25 flights?

b. Use the normal approximation to estimate the probability of atleast one disaster in 25 missions.

Grading Rubric

Please referto the rubric below for the grading criteria for this assignment.

Answers

Dr Nick
(4)
Status NEW Posted 10 Nov 2017 12:11 PM My Price 13.00

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