1.As the standard deviation of a normal distribution increases, the percentage of the area between 1 standard deviation will

a.increase.

b.stay the same.

c.decrease.

d.become non-symmetrical.

2.A Z score of +1.00 indicates a score that lies

a.one standard deviation unit to the right of the mean.

b.one standard deviation unit to the left of the mean.

c.1/2 of one standard deviation unit on each side of the mean.

d.Any of the above are possible.

3.When an empirical normal distribution of scores is standardized

a.the mean will become 0.

b.the standard deviation will become 1.

c.each score will be converted to a Z score.

d.All of the above.