algebra

posted by .

In a set of 400 values, the mean is 121 and the standard deviation is 14. Estimate how many values fall in between each interval

a) 107 - 135

b)93 - 149

c) 79 - 163

  • algebra -

    Z = (score-mean)/SD

    Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions related to the Z scores. Use the proportions between Z and mean and multiply by 400.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. statistics

    I.use the chebyshev's theorem to find out what percentage of the values will fall between 201 and 257 for a data set with a mean of 229 and standard deviation of 14. II. use the emperical rule to find out two values 68% of the data …
  2. Math-Statistics

    I. Use Chebyshev’s theorem to find what percent of the values will fall between 156 and 276 for a data set with a mean of 216 and standard deviation of 12. II. Use the Empirical Rule to find what two values 68% of the data will fall …
  3. Math

    I. Use Chebyshev’s theorem to find what percent of the values will fall between 156 and 276 for a data set with a mean of 216 and standard deviation of 12. II. Use the Empirical Rule to find what two values 68% of the data will fall …
  4. math 3b

    In a set of 400 values, the mean is 121 and the standard deviation is 14. Estimate how many values fall in betweeb each interval
  5. algebra

    In a set of 400 values, the mean is 121 and the standard deviation is 14. Estimate how many values fall in between each interval. a) 107 - 135 = b) 93 - 149 = c) 79 - 163 =
  6. Stats

    I. Use Chebyshev’s theorem to find what percent of the values will fall between 183 and 227 for a data set with a mean of 205 and standard deviation of 11. II. Use the Empirical Rule to find what two values 99.7% of the data will …
  7. Math-confused...plz help

    I. Use Chebyshev’s theorem to find what percent of the values will fall between 183 and 227 for a data set with a mean of 205 and standard deviation of 11. II. Use the Empirical Rule to find what two values 99.7% of the data will …
  8. math

    In a set of 400 values, the mean is 121 and the standard deviation is 14. Estimate how many values fall in between each interval?
  9. Math

    Assume a data set is normally distributed with mean 11 and standard deviation 3. If the data set contains 30 data values, approximately how many of the data values will fall within the range 8 to 14?
  10. Statistics

    Write an inequality that represents all of the data values X, that fall between the values of the mean +/- the standard deviation

More Similar Questions