Question

in a normal distribution of scores, 68.26% of the z scores fall between ________ and ________ standard deviations of the mean.
-3 and +3
-1 and +1
-2 and +2
question 10 0.66 pts
if you convert an entire distribution of raw scores into z scores, the distribution of z scores will have a mean equal to ________ and a standard deviation equal to ________

1. 1

1.0

Explanation:

For the first question, in a normal distribution, approximately 68.26% of the z - scores fall between - 1 and + 1 standard deviations of the mean. This is a well - known property of the normal distribution. For the second question, when converting a distribution of raw scores into z - scores, the mean of the z - score distribution is 0 and the standard deviation is 1.

Answer:

Question 1: B. -1 and +1
Question 2: Mean = 0, Standard Deviation = 1