A large population has a mean of 200 and a standard deviation of 40. Which one of the following best describes the percentage of measurements that fall in an interval that is within two standard deviations of the mean?

  1. 👍
  2. 👎
  3. 👁
  1. What are your alternatives?

    Approximately 95% for any normal distribution.

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Statistics

    A population has a mean of   30 and a standard deviation of   5. a. If 5 points were added to every score in the population, what would be the new values for the mean and standard deviation? b. If every score in the population

  2. statistics

    A consumer group wants to know if an automobile insurance company with thousands of customers has an average insurance payout for all their customers that is greater than $500 per insurance claim. They know that most customers

  3. statistics

    How large a sample should be selected to provide a 95% confidence interval with a margin of error of 10 (to the nearest whole number)? Assume that the population standard deviation is 40.

  4. statistics (10)

    Annual starting salaries for college graduates with degrees in business administration are generally expected to be between $30,000 and $45,000. Assume that a 95% confidence interval estimate of the population mean annual starting

  1. statistics

    A researcher is interested in estimating the average salary of teachers in a large urban school district. She wants to be 95% confident that her estimate is correct. If the standard deviation is $1050 (σ = 1050), how large of a

  2. math

    The standard deviation of a sample taken from population A is 17.6 for a sample of 25. The standard deviation of a sample taken from population B is 21.2 for a sample of 30. The standard deviation of the sample mean differences

  3. statistics

    For a population that has a standard deviation of 10, figure the standard deviation of the distribution of means for samples of size- (b) 3.

  4. statistics

    what are the mean and standard deviation of a sampling distribution consisting of samples of size 16? these sameples were drawn from a population whose mean is 25 and who standard deviation is 5. a. 25 and 1.25 b. 5 and 5 c. 25

  1. Math (Statistic)

    Considered the sampling distribution of a sample mean obtained by random sampling from an infinite population. This population has a distribution that is highly skewed toward the larger values. a) How is the mean of the sampling

  2. Math1(Please Help Me)

    A group of 894 women aged 70-79 had their height and weight measured. The mean height was 159 cm with a standard deviation of 5 cm and the mean weight was 65.9kg with a standard deviation of 12.7kg. Both sets of data are fairly

  3. Statistics

    1) Let z be a normal random variable with mean 0 and standard deviation 1. The 4th decile of z is ___. a) 0.67 b) –1.25 c) -0.25 d) 1.28 e) 0.50 2) According to the central limit theorem, if a sample of size 50 is drawn from a

  4. Rioja

    A normally distributed population with 200 elements has a mean of 60 and a standard deviation of 10. The probability that the mean of a sample of 25 elements taken from this population will be smaller than 56 is:

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