Normal Distribution and Z-Scores

The value of the mean and standard deviation of a standard normal distribution is __ and __ respectively.

• 0 and 1

• 1 and 0

The wider the width of the normal curve, the

• higher its peak

• larger its sd

• lower its peak

• smaller its sd

What is the area for the left side of the curve from the mean?

• 1

• 0.75

• 0.5

• 0.25

How many standard scores is 14 located if a set of scores is normally distributed with a mean of 12 and a standard deviation of 0.5?

• 2 standard scores to the left

• 2 standard scores to the right

• 4 standard scores to the left

• 4 standard scores to theright

• 0.3485

• 0.1515

• 0.6515

• 0.6892

• 0.2486

• 0.7586

• 0.1892

• 0.9693

• 0.4693

• 0.0307

• 0.5307

• 0.4706

• 0.3875

• 0.0832

• 0.5538

• 0.4907

• 0.8907

• 0.1093

• 0.9864

• 0.4864

• 0.0136