A normal population has a mean of 12.2 and a standard deviation of 2.5. Refer tothe table inAppendix B.1.

a.Compute thez-value associated with 14.3.(Round the final answer to 2 decimal places.)

z=

b.What proportion of the population is between 12.2 and 14.3?(Roundz-score computation to 2 decimal places and the final answer to 4 decimal places.)

Proportion

c.What proportion of the population is less than 10.0?(Roundz-score computation to 2 decimal places and the final answer to 4 decimal places.)

Proportion