Math check

posted by .

The middle 69% of a normally distributed population lies between what two standard scores? (Give your answers correct to two decimal places.)0.31 and 1.69 was my answers and they are wrong????. .

  • Math check -

    You want the Z values containing 69%. Those are -1 <=Z <= 1
    (well, 1.015, really)

    that is, within 1 std of the mean.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    Consider the following bivariate data. Point A B C D E F G H I J x 3 4 2 1 7 2 1 0 4 2 y 1 7 3 3 6 6 5 0 6 2 (a) Construct a scatter diagram of the given bivariate data. (Do this on paper. Your instructor may ask you to turn in this …
  2. math

    Consider the following set of data. (18, 12), (29, 48), (65, 29), (82, 24), (115, 56), (124, 13) (a) Calculate the covariance of the set of data. (Give your answer correct to two decimal places.) (b) Calculate the standard deviation …
  3. Math check

    IQ scores in a certain population are normally distributed with a mean of 96 and a standard deviation of 12. (Give your answers correct to four decimal places.) (a) Find the probability that a randomly selected person will have an …
  4. Math check

    The middle 69% of a normally distributed population lies between what two standard scores?
  5. Math check

    A population has a standard deviation ó of 28 units. (Give your answers correct to two decimal places.) (a) Find the standard error for the mean if n = 10. SD/Sqrt of N = 28/10^=.28
  6. Math check

    A random sample of size 26 is to be selected from a population that has a mean ì = 46 and a standard deviation ó of 15. (a) This sample of 26 has a mean value of x, which belongs to a sampling distribution. Find the shape of this …
  7. math check

    A machine produces parts with lengths that are normally distributed with ó = 0.52. A sample of 16 parts has a mean length of 75.07. (a) Give a point estimate for ì. (Give your answer correct to two decimal places.) 75.07. (b) Find …
  8. math check

    The amount of fill (weight of contents) put into a glass jar of spaghetti sauce is normally distributed with mean ì = 843 grams and standard deviation of ó = 9 grams (ii) Find the standard error of the x distribution. (Give your …
  9. statistics check

    Consider the following bivariate data. Point A B C D E F G H I J x 3 4 2 1 7 2 1 0 4 2 y 1 7 3 3 6 6 5 0 6 2 (b) Calculate the covariance. (Give your answer correct to two decimal places.) 5.35 was my answer . (c) Calculate sx and …
  10. Math

    What is the difference between "Give your answer correct to two decimal places." and "Round your answers to two decimal places." ?

More Similar Questions