In a normal distribution of 200 cases how many fall between Z = -1.5 and Z = +1.5?

a. 173

b. 87

c. 43

d. 27In a normal distribution what proportion of cases falls below Z = +1.40?

a. .4192

b. .0808

c. .9192

d. .5808In a normal distribution of 200 cases how many fall above Z = +1.25?

a. 39

b. 79

c. 21

d. 11In a normal distribution with a mean of 50 and a standard deviation of 10 what proportion of the cases falls above a score of 42?

a. .7881

b. .2119

c. .2881

d. .7119In a normal distribution with a mean of 50 and a standard deviation of 10 what proportion of cases falls between 45 and 55?

a. .3085

b. .3830

c. .6170

d. .1915In a normal distribution of 400 scores with a mean of 50 and a standard deviation of 10 how many cases fall between 50 and 60?

a. 98

b. 142

c. 68

d. 137In a normal distribution the bottom 75% of the cases fall below what Z score?

a. .50

b. .38

c. 1.28

d. .67