The repair cost for a certain model of laptop computer has a normal distribution with a mean of $100, and with a standard deviation of $25. If 16 ovens are sent for repairs, find the probability that the average cost of repairs will be within $10 of the mean.

  1. 👍
  2. 👎
  3. 👁
  1. It would help if you proofread your questions before you posted them.

    Have no data on ovens.

    Z = (score-mean)/SEm

    SEm = SD/√n

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

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. stat

    Which of the following statements is true about the t-distribution with k degrees of freedom? i. the t-distribution is symmetric ii. the t-distribution with k degrees of freedom has a smaller variance than the t-distribution with

  2. Math

    The total (after-tax) cost of a laptop computer is $1278.24. The local sales tax rate is 7.6%. What is the retail (pre-tax) price ?

  3. 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 normal ditribution, the mean and the

  4. business math

    The Consumer Electronics show reports that the HP Spectre laptop computer starts at $99.70 for a base configuration. The model displayed at its recent show costs $1,361, $124 more than the comparable 13-inch Apple MacBook Air. If

  1. science

    Consider the scenario. Scientists have developed a computer program that can be used to predict when volcanoes will erupt. What type of scientific model is this? mathematical model conceptual model practical model physical model I

  2. Math

    Would someone please double check my answers. The retail cost of a computer is 32% more than its wholesale cost? which statement is true? 1. THe retail cost of the computer is 132% more than the wholesale price. 2. THe wholesale

  3. English 1

    Read the excerpt from a contemporary story. Lara was one of the brightest computer programmers her professor had ever seen. She shared her gifts by tutoring other students, many of whom were much older. It was a common sight to

  4. Statistics

    Automobile repair costs continue to rise with the average cost now at $367 per repair (U.S. News & World Report website, January 5, 2015). Assume that the cost for an automobile repair is normally distributed with a standard

  1. Data Management

    Stuck with 2 questions. Need of assistance before tomorrow. Question 1. A summer camp has seven 4.6m canoes, ten 5.0m canoes, four 5.2m canoes, and four 6.1m canoes. Canoes are assigned randomly for campers going on a canoe trip.

  2. Statistics

    As the degrees of freedom for the t-distribution increase, the distribution approaches the value of zero for the mean. the t-distribution. the normal distribution. the F distribution.

  3. statistics

    Assume that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of $2,225 per hour and a standard deviation of $220. What is the operating cost for the lowest 5 percent of the

  4. Statistics

    Computer Depot is a large store that sells and repairs computers. A random sample of 110 computer repair jobs took technicians an average of 93.2 minutes per computer. Assume that o is known to be 16.9 minutes. Find a 99%

You can view more similar questions or ask a new question.