The scores on an exam are normally distributed, with a mean of 74 and a standard deviation of 7. What percent of the scores are less than 81?

A. 84%

B. 13.5%

C. 50%

D. 16%

If the correlation between variables is. 70, what percent of the variance is shared variance?

As shown below, an observer (O) is located 660 feet from a tree (T). The observer notices a hawk (H) flying at a 35° angle of elevation from his line of sight.

Luke has $21 more than rachel and $48 more than daniel. altogether they have $168. how much does luke have?

What number makes 39.99x + 450 greater than 59.99x + 900?

Simplify: - 9 (5 - 6x) A) - 45 + 54x B) - 45 - 54x C) 45 + 54x D) 45 - 54x

What does x equal in - 3+5x=-26

78 correct answers out of 100 test questions 39 correct answers out of 50 test questions

Subtract - 7n + 2 from 2n - 1 What is the answer? A) 9n + 1 B) 9n - 3 C) - 9n + 3 D) 5n + 1

How many different ways can 9 people be seated around a circular table?

At the end of the year, Mrs. Weeks bought an assortment of new balls to replace some of the old ones. She had $150.00 to spend. Describe two different ways that Mrs. Weeks could spend her money if she bought at least two of each of the balls.