Chapter 6

Question 1

a. p = 0.05
b. z ≤ 1.54

Answer 1

z ≤ 1.64
p = 0.9382

Question 2

a. p = 0.05
b. z more extreme than ±1.645

Answer 2

-1.96 z 1.96
p = 0.1

Question 3

In a normal distribution, ______% of cases are between z = 1.50 and z = 2.47

Answer 3

6

Question 4

In a normal distribution, 95% of cases are less extreme than ____ standard deviation from the mean

Answer 4

1.96

Question 5

In a normal distribution, 5% of cases are larger than z =

Answer 5

1.65

Question 6

In a normal distribution, the probability of cases less than z = 2.00 is __

Answer 6

0.9772

Question 7

In a normal distribution, _____% of cases are between the mean and z = -2.44

Answer 7

49.27

Question 8

The area under the curve of a range of scores in the normal distribution equals the probability of the range of scores

Answer 8

False

Question 9

The mean and standard deviation of a sample are fully adequate for calculating the probability of a range of scores

Answer 9

False

Question 10

The area under the histogram for a range of scores in a sample distribution is proportional to the probability of the range of scores

Answer 10

True

Question 11

All normal distributions can be transformed to a standard normal distribution

Answer 11

True

Question 12

The area under the histogram for a range of scores in a sample distribution is equal to the area under the curve for the same range of scores in a normal distribution with the same mean and standard deviation.

Answer 12

False

Question 13

Standardizing a sample distribution transforms it to a normal distribution

Answer 13

False

Question 14

The area under the curve of a range of scores in the standard normal distribution equals the probability of the range of scores

Answer 14

True