the scores on a psychology exam were normally distributed with a mean of 56 and a standard deviation of 9. A failing grade on the exam was anything 2 or more standard deviations below the mean. What was the cutoff for a failing score?

Give an example of an equation that has a solution of 5

What is the mass of an object that requieres 100N of force in order to accelerate it at 10m/s2

What is 1.3, 1 1/3, 1.34 in least to greatest order

The population of a town grows at a rate proportional to the population present at time t. The initial population of 500 increases by 5% in 10 years. What will be the population in 20 years

In a bin containing 500 marbles, 180 are red, 240 are blue, and 80 are green. In a bowl of 25 marbles scooped from this bin, how many would be expected to be green? A. 4 B. 8 C. 9 D. 12

A clock is shown. The hour hand is at 9 and the minute hand is at 12. What is the sector area created by the hands of a clock with a radius of 9 inches when the time is 4:00? 6.75π in. 2 20.25π in. 2 27π in. 2 81π in. 2

A school bought $548 in basketball equipment and uniforms costing $29.50 each. The total cost was $2,023. write and equation you can use to find the number of uniforms the school purchased.

A cube with faces numbered 1 through 6 is rolled 75 times and the results are given in the table below

The number 13 is less than the number of hours Nathan's volleyball team trains in a week. Which of the following inequalities represents the number of hours that the volleyball team trains in a week? A. x > 13 B. x = 13 C. x < 13 D. x = 12

A tree is 4 feet 4 inches tall, how tall is it in inches