statistics

In this question, use Excel functions rather than Normal distribution tables.
The number of new cars sold by "Ma's New Car Factory" in a financial year can be approximated by a normal distribution with a mean of 125,000 cars and a standard deviation of 34,000 cars.
Part A
In order to recover all costs associated with manufacture they need to sell 100,000 cars. What is the probability that "Ma's New Car Factory" will do better than just covering their costs if the sales are distributed as expected? Give your answer to two decimal places in the form x.xx.

Part B
What is the number of cars sales that the company has a only a 10% chance of achieving next year? Give you answer as a whole number.

  1. 0
  2. 12
asked by Sylvia
  1. A. Z = (score-mean)/SD

    Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score.

    B. Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.10) to find the Z score. Insert Z value into equation above.

    1. 0
    posted by PsyDAG
  2. A.0.23

    1. 0
    posted by vena
  3. A. 8.95

    1. 0
    posted by Park

Respond to this Question

First Name

Your Response

Similar Questions

  1. Stastics

    Suppose cars arrive at Burger King's drive-through at the rate of 20 cars every hour between 12:00 noon and 1:00 pm. A random sample of 40 one-hour periods between 12:00 noon and 1:00 pm is selected and has 22.1 as the sample mean
  2. Statistics

    Suppose cars arrive at Burger King's drive-through at the rate of 20 cars every hour between 12:00 noon and 1:00 pm. A random sample of 40 one-hour periods between 12:00 noon and 1:00 pm is selected and has 22.1 as the sample mean
  3. Statistics

    I am having trouble with the following problem: P(Z > +1.34) Would someone help me? If you've already normalized the number you're interested in, then look up in your tables (the normal distribution tables) to find 1.34 standard
  4. stats

    (a) The test had six multiple-choice items that were scored as correct or incorrect, so the total score was an integer between 0 and 6. Do you think that these data are Normally distributed? Explain why or why not. The
  5. stats

    (a) The test had six multiple-choice items that were scored as correct or incorrect, so the total score was an integer between 0 and 6. Do you think that these data are Normally distributed? Explain why or why not. The
  6. Math/Statistics

    STATISTICS PLEASE HELP!!!!! I am sorry this is jy second time posting, but I really need help. I have tried contacting my teacher and classmates with no luck. Please just steer me in the right direction!: Suppose cars arrive at
  7. statistics

    without the use of the standard normal tables, should techniques of calculus be used to find the probabilities concerning a normal distribution?
  8. Statistics

    Which of the following statements are correct? 1.A normal distribution is any distribution that is not unusual. 2.The graph of a normal distribution is bell-shaped. 3.If a population has a normal distribution, the mean and the
  9. statistics

    Which of the following statements are correct? a. a normal distribution is any distribution that is not unusual b. the graph of a normal distribution is bell-shaped c. if a population has a normal distribution, the mean and the
  10. statistic

    1. Which of the following statements are correct? a. A normal distribution is any distribution that is not unusual. b. The graph of a normal distribution is bell-shaped. c. If a population has a normal distribution, the mean and

More Similar Questions