# Question

A video-rental chain estimates that annual expenditures of members on rentals follow a normal distribution with a mean of $100. It was also found that 10% of all members spend more than $130 in a year. What percentage of members spends more than $140 in a year?

## Answer to relevant Questions

It is estimated that amounts of money spent on gasoline by customers at a gas station follow a normal distribution with a standard deviation of $2.50. It is also found that 10% of all customers spent more than $25. What ...In a large department store a customer-complaints office handles an average of six complaints per hour about the quality of service. The distribution is Poisson. a. What is the probability that in any hour exactly six ...Suppose that you toss a pair of dice and write down the value of the faces from each die. a. What is the population distribution for one die? b. Determine the sampling distribution of the sample means obtained by tossing two ...The times spent studying by students in the week before final exams follows a normal distribution with standard deviation 8 hours. A random sample of four students was taken in order to estimate the mean study time for the ...For an audience of 600 people attending a concert, the average time on the journey to the concert was 32 minutes, and the standard deviation was 10 minutes. A random sample of 150 audience members was taken. a. What is the ...Post your question

0