Suppose that the time to complete a test is bell-shaped distributed with mean 45 minutes and standard deviation 15 minutes. if the test period is 75 minutes long, what proportion of students will be expected to not be able to finish

You have 16 CDs to put in your empty five shelf CD rack. Can you place the CDs so that each shelf contains three or fewer CDs? Can you arrange them so that each shelf contains exactly three?

Subtracting 3x^2+4x-5 from 7x^2+x+9

Carl is paid an hourly rate of $12.65 what is his weekly gross pay if he works 25 hours per week?

Convert 100 inches per minute to feet per hour?

Find out the wrong number in the sequence. 623, 251, 543, 356

If you roll a standard number cube 65 times, how many times do you expect the cube to show an even number? Round the measure to the nearest whole number

Sound waves are emitted from a fishing boat. Some of the sound waves are reflected by fish and detected back at the boat. The shortest time between the sound waves being emitted and detected is 0.26 s. The speed of sound in water is 1500 m/s.

To make orange paint, Pedro mixes red paint and yellow paint in the ratio 3:2. If he uses 8.5 gallons of yellow paint, how many gallons of red paint does he use?

In which of these examples, binomial distribution can be used? a) Finding the best month to launch a new product b) Accurately predicting who will be promoted at work c) Predicting the score of a cricket match d) Probability of getting a certain

Translate. "The quantity x minus 2y, plus 3" a. 3 (x - 2y) b. (x - 2y) + 3 c. 2y + 3 d. 2y - 3 e. 2 (y + 3)