dbostic7523 dbostic7523

04-11-2022
Mathematics

Answered

the amount of time spent by north american adults watching television per day has a mean of 6 hours and a standard deviation of 1.5 hours. a) what is the probability that a randomly selected north american adult watches television for more than 7 hours per day? b) what is the probability that the average time watching television by a random sample of 36 north american adults is more than 7 hours?

Answer :

Other Questions

William works for a certain hourly rate for the first 40 hours of labor each week. For every hour of labor beyond 40 hours, William is paid at an increased rate

the american automobile association (aaa) reported that families planning to travel over the labor day weekend would spend an average of $749. assume that the a

Complete the ratio table to convert the units of time from hours to weeks or weeks to hours. Hours Weeks 168168168 111 1{,}0081,0081, comma, 008 555

the annual precipitation amounts in a certain mountain range are normally distributed with a mean of 90 inches, and a standard deviation of 14 inches. what is t

shows that the number of holding penalties assessed has a mean of penalties per game and a standard deviation of penalties per game. what is the probability tha

an insurance company, based on past experience, estimates the mean damage for a natural disaster in its area is $5,000. after introducing several plans to preve

Suppose x has a normal distribution with mean 80 and standard deviation 5. What is the 90th percentile of x?.

suppose that the annual rainfall in ferndale, california, is known to be normally distributed, with a mean of 35.5 inches and a standard deviation of 2.5 inches