# Question

University and college students average 7.2 hours of sleep per night, with a standard deviation of 40 minutes. If the amount of sleep is normally distributed, what proportion of university and college students sleep for more than 8 hours?

## Answer to relevant Questions

Refer to Exercise. Find the amount of sleep that is exceeded by only 25% of students.In Exercise, University and college students average 7.2 hours of sleep per night, with a standard deviation of 40 minutes. If the amount ...Because of the relatively high interest rates, most consumers attempt to pay off their credit card bills promptly. However, this is not always possible. An analysis of the amount of interest paid monthly by a bank’s Visa ...The lifetimes of televisions produced by the Hishobi Company are normally distributed with a mean of 75 months and a standard deviation of 8 months. If the manufacturer wants to have to replace only 1% of its televisions, ...The annual rate of return on a mutual fund is normally distributed with a mean of 14% and a standard deviation of 18%.a. What is the probability that the fund returns more than 25% next year?b. What is the probability that ...The manager of a gas station has observed that the times required by drivers to fill their car’s tank and pay are quite variable. In fact, the times are exponentially distributed with a mean of 7.5 minutes. What is the ...Post your question

0