A normal distribution has μ = 28 and σ = 5   (a) Find the z score corresponding to x = 23. (Enter an exact number.) (b) Find the z score corresponding to x = 40. (Enter a number.) (c) Find the raw score corresponding to z = −3. (Enter an exact number.) (d) Find the raw score corresponding to z = 1.7. (Enter a number.)

Q scores are normally distributed with μ = 100 and σ = 15. Find the IQ score separatingthe highest 4% of all scores.

Find the mean of the distribution shown below: (X,P(X)  = (1,0.58); (3, 0.42) X 1 3 P(X) 0.58 0.42

A score that is 2 points higher than the sample mean has a z-score of z = 0.5 and a score of X = 44 has a z-score of -1.00What is the sample mean?

Which z-score has the higher frequency? (a) z = +1.0 or z = +2.3; (b) z = −2.8 or z = −1.7; (c) z = −.70 or z = −.20; (d) z = 0.0 or z = −2.0.

Q1. A psychologist conducted a study on the relationship between introversion and shyness. The values are results for scales of introversion and shyness. High positive scores on each scale indicate high introversion or shyness; and high negative scores indicate low introversion or shyness. Data collected from 10 people as follows: Introversion 4 -7 -1 0 6 7 -4 -9 -5 8 Shyness 11 -7 -1 -3 0 7 -1 -8 -1 5 a) Compute the correlation coefficient relating introversion and shyness scores. b) Find the regression equation which predicts introversion from shyness. c) What introversion score would you predict from a shyness score of 7?

Q.8

our p value is .03 and you chose your α level to be .05. What kind of error could you be making?   a. Type I error   b. Type II error   c. Type I and Type II error   d. Neither errors

Find the z-score corresponding to the given value and use the z-score to determine whether the value is significantly low or high.  Consider a score to be significantly low if its z-score is less than  or equal to -2.  Consider a z-score to be significantly high if it is greater than or equal to 2.  Round the z-score to the nearest tenth if necessary. A body temperature of 96.7° F given that human body temperatures have a mean of 98.20° F and a standard deviation of 0.62°.

just the answer plz.