If there are 1000 people in a group, how many would you expect to score above 90?

Mean: 85
SD: 10

  1. 👍 0
  2. 👎 0
  3. 👁 151
  1. go to
    enter 85 for the mean, 10 for the SD
    click on above and enter 90 in that box
    read : 0.308538 in the "shaded" part

    so expected number above 90 from 1000 people is
    .308538(1000) = 308.5 , so appr. 309 people

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. I need help, I'm stuck...what is the correct answe

    The table below shows the scores of a group of students on a 10-point quiz. Test Score Frequency 3 0 4 2 5 2 6 1 7 2 8 3 9 0 10 4 The mean score on this test is: 6.5 The median score on this test is: 7.5

  2. Art

    The picture is of colorful clogs. Through this collection, you can gain a better understanding of all of the following except. A. The history and traditions of a group of people. B. The diversity of a group of people during a

  3. Precal

    The number of people in a town of 10,000 who have heard a rumor started by a small group of people is given by the following function: N(t) = 10,000/(5 + 1245e-.97t) 14. How many people were in the group that started the rumor?

  4. math

    A museum charges $4 for a group of 4 or fewer people. A group of more than 4 people must, in addition to the $4, pay $2 per person for the number of people above 4. The maximum group size is 9. (a) What are the domain and range of

  1. Statistics: IQ Score (X) and Exam Score (Y)

    Assuming that the regression equation for the relationship between IQ score and psychology exam score is Y' = 9+ 0.274X, what would you expect the psychology exam scores to be for the following individuals given their IQ exam

  2. statistic

    Suppose the people living in a city have a mean score of 48 and a standard deviation score of 7 on a measure of concerns about the environment. Assume that these concerns are normally distributed using the 50%- 34% - 14% figures.

  3. Statistics

    Across the USA, results for these exams are normally distributed. What does that mean and why is this the case? If you were to create a histogram of all GRE scores, what would you expect the histogram to look like? Would it be

  4. statistics

    1. Suppose you administered an anxiety test to a large sample of people and obtained normally distributed scores with a mean of 45 and a standard deviation of 4. Do not use the web calculator to answer the following questions.

  1. Math

    The table below shows the scores of a group of students on a 10-point quiz. Test Score Frequency 3 1 4 1 5 2 6 3 7 1 8 1 9 1 10 4 The mean score on this test is: The median score on this test is:

  2. Statistic in Social Science

    The verbal part of the Graduate Record Exam (GRE) has a mean of 500 and a standard deviation of 100. Use the normal distribution to answer the following questions: a. If you wanted to select only student at or above the 90th

  3. Statistics

    The Graduate Record Examination (GRE) has a combined verbal and quantitative mean of 1000 and a standard deviation of 200. Scores range from 200 to 1600 and are approximately normally distributed. For each of the following

  4. Math

    1) The manager of a warehouse would like to know how many errors are made when a product’s serial number is read by a bar-code reader. There are 24 errors after 1000 scans. Is it reasonable for the manager to expect less than 5%

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