# Question

A random sample of college students aged 18 to 24 years was obtained, and the number of hours of television watched in a typical week was recorded.

(a) Use the following normal probability plot to determine if the data could have come from a normal distribution.

(b) Determine the mean and standard deviation of the sample

data.

(c) Using the sample mean and sample standard deviation obtained in part (b) as estimates for the population mean and population standard deviation, respectively, draw a

graph of a normal model for the distribution of weekly hours of television watched.

(d) Using the normal model from part (c), ﬁnd the probability that a college student aged 18 to 24 years, selected at random, watches between 20 and 35 hours of television each week.

(e) Using the normal model from part (c), determine the proportion of college students aged 18 to 24 years who watch more than 40 hours of television per week.

(a) Use the following normal probability plot to determine if the data could have come from a normal distribution.

(b) Determine the mean and standard deviation of the sample

data.

(c) Using the sample mean and sample standard deviation obtained in part (b) as estimates for the population mean and population standard deviation, respectively, draw a

graph of a normal model for the distribution of weekly hours of television watched.

(d) Using the normal model from part (c), ﬁnd the probability that a college student aged 18 to 24 years, selected at random, watches between 20 and 35 hours of television each week.

(e) Using the normal model from part (c), determine the proportion of college students aged 18 to 24 years who watch more than 40 hours of television per week.

## Answer to relevant Questions

A random sample of O-rings was obtained, and the wall thickness (in inches) of each was recorded. Use a normal probability plot to assess whether the sample data could have come from a population that is normally ...Suppose X is a binomial random variable. To approximate P(3 ≤ X ≤ 10), compute ____________. The probability that more than 20 people want to see the marriage tax penalty abolished A discrete random variable is given. Assume the probability of the random variable will be approximated using the normal distribution. ...n = 75, p = 0.75, x = 60 Compute P(x) using the binomial probability formula. Then determine whether the normal distribution can be used as an approximation for the binomial distribution. If so, approximate P(x) and compare ...According to a USA Today “Snapshot,” 3% of Americans surveyed lie frequently. You conduct a survey of 500 college students and ﬁnd that 20 of them lie frequently. (a) Compute the probability that, in a random sample ...Post your question

0