1. Whatproportionof the area under the curve falls betweenz= -2.8 andz= + 2.0?
2. Whatproportionof the area under the curve falls betweenz= -1.8 andz= + 2.6?
3. If you have an IQ score of 122, what proportion of the population has a lower IQ than you do?

Note: IQ tests are usually standardized so they have a mean of 100 and standard deviation of 15.

1. Round your answer to 2 decimal places, and report it as a percentage with no space between the numbers and the % sign.

4.

If you have an IQ score of 143, what percentage of the population has a higher IQ than you do?

Note: IQ tests are usually standardized so they have a mean of 100 and standard deviation of 15.

Round your answer to 2 decimal places, and report it as a percentage with no space between the numbers and the % sign.

5-

You scored a 60 on your exam, the mean was 55, and the standard deviation was 3.

This put you in the _____th percentile.

Round your answer to the nearest whole number

6- Question 10 options:

Given that you had a score of 53, a sample mean of 51, and a standard deviation of 10, what proportion of scores was below 53?

Draw and label a figure to help you ensure that you look up the correct area under the curve.

Round your answer to 2 decimal places, and report it as a decimal.

7-

Given that you had a score of 78, a sample mean of 88, and a standard deviation of 5, what proportion of scores was above 78?

Draw and label a figure to help you ensure that you look up the correct area under the curve.

Round your answer to 2 decimal places, and report it as a decimal.