# Question: The amount of time spent by North American adults watching

The amount of time spent by North American adults watching television per day is normally distributed with 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 five North American adults is more than 7 hours?

c. What is the probability that, in a random sample of five North American adults, all watch television for more than 7 hours per day?

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 five North American adults is more than 7 hours?

c. What is the probability that, in a random sample of five North American adults, all watch television for more than 7 hours per day?

## Answer to relevant Questions

The manufacturer of cans of salmon that are supposed to have a net weight of 6 ounces tells you that the net weight is actually a normal random variable with a mean of 6.05 ounces and a standard deviation of .18 ounces. ...The number of pages produced by a fax machine in a busy office is normally distributed with a mean of 275 and a standard deviation of 75. Determine the probability that in 1 week (5 days) more than 1,500 faxes will be ...a. The manufacturer of aspirin claims that the proportion of headache sufferers who get relief with just two aspirins is 53%. What is the probability that in a random sample of 400 headache sufferers, less than 50% obtain ...Independent random samples of 10 observations each are drawn from normal populations. The parameters of these populations arePopulation 1: µ = 280, σ = 25Population 2: µ = 270, σ = 30Find the probability that the mean of ...The average North American loses an average of 15 days per year to colds and flu. The natural remedy Echinacea reputedly boosts the immune system. One manufacturer of Echinacea pills claims that consumers of its product will ...Post your question