APPLYING THE NORMAL CURVE CONCEPTS IN PROBLEM SOLVING

Find the area under the normal distribution curve to the left of z =0.27.

• 0.4892

• 0.3936

• 0.3897

• 0.6064

A z-score tells you...

• How many standard deviations away from the mean a score lies.

• The original raw score on which it is based.

• The standard deviation of sampling distribution

• If the distribution it comes from is normal

Find the area of the shaded region if the z-score is 0.75

• 0.7734

• 0.7580

• 0.2266

• 0.2420

This data is a normal distribution.

What percent of the data is in the shade region?

• 95%

• 50%

• 68%

• 99.7 %

What does this symbol represent?

• Mode

• Standard deviation

• Median

• mean

find the area of shaded region if the z-scores is 1.25

• 0.8944

• 0.1151

• 0.1056

• 0.8849

This data is normally distributed. What percent of the data is in shaded region?

• 68%

• 95%

• 50%

• 99.7%

Where can we locate the mean in the normal curve?

• At the center

• to the right portion

• to the left portion center

• On the z- axis

Find the area under the standard normal curve to the right of z = -2.67

• 0.1234

• 0.9962

• 0.0869

• 0.0008

If Ms. San Juan’s score is 87, the class average is 82 and the SD is 4. What is San Juan’s score?

• 1.02

• 1.20

• 1.25

• -1.25