Question

1.IRS workers process an average of 45 cases per month during tax season, with a standard deviation of 3 cases. The distribution of these cases is normal. Approximately what percentage of IRS workers would you expect to process less than 51 cases?

A.84&

B.95%

C.97.5%

D.68%

A. The distribution of weights for 24-yr old women is normally distributed with a mean of 128 lbs and a standard deviation of 7 lbs. What percent of 20-yr old women weigh more than 149 lbs?

A.5%

B.0.3%

C.0.15%

D.15%

E.2.5%

B.Fill in the blanks:

The distribution of weights for 24-yr old women is normally distributed with a mean of 128 lbs and a standard deviation of 7 lbs. According to the empirical rule, approximately 99.7% of all 20-yr old women will weigh between?

Blank 1:

Blank 2:

C.The Honors College only accepts applicants that score 2.5 standard deviations above the mean on a standard aptitude test with a mean of 310 and a standard deviation of 16. To be accepted by the Honors College the minimum test score that must be achieved is ?

Blank 1:

D. The distribution of weights for 24-yr old women is normally distributed with a mean of 128 lbs with a standard deviation of 7 lbs.

The z-score for a 24-yr old female with a weight of 118 lbs is?

Blank 1:

Answer 1