One hundred eight Americans were surveyed to determine the number of hours they spend watching television...

Question

Question

One hundred eight Americans were surveyed to determine the number of hours they spend watching television...

One hundred eight Americans were surveyed to determine the number of hours they spend watching television each month. It was revealed that they watched an average of 151 hours each month with a standard deviation of 25 hours. Assume that the underlying population distribution is normal.

Calculate the EBM.Use a 99% Confidence Level

Round to two decimal places.

math Statistics-And-Probability

Add a comment Improve this question Transcribed image text

Answer 1

Answer #1

Degrees of freedom df = n-1 = 108 - 1 = 107

t critical value at 0.01 significance level for 107 df = 2.623

EBM = t $\alpha$ /2 * S / sqrt(n)

= 2.623 * 25 / sqrt(108)

= 6.31

Add a comment

Answer 2

Similar Homework Help Questions

One hundred eight Americans were surveyed to determine the number of hours they spend watching te...

One hundred eight Americans were surveyed to determine the number of hours they spend watching television each month. It was revealed that they watched an average of 151 hours each month with a standard deviation of 32 hours. Assume that the underlying population distribution is normal. Which distribution should you use for this problem?
one hundred eight americans were surveyed determine. the number of hours they spend watching tv each...

one hundred eight americans were surveyed determine. the number of hours they spend watching tv each month. it was revealed that they watched an average of 151hours each month with a standard deviation of 32 hours. Assume that the underlying population destitution is normal. b. find critical value of 99% population mean time spent waiting c. which distribution should you use for this problem? d.calculate error bound e. sketch graph f. what are the lower and upper bounds
1. One hundred eight Americans were surveyed to determine the number of hours they spent watching...

1. One hundred eight Americans were surveyed to determine the number of hours they spent watching television each month. The average time was 75 hours a month (that’s approximately 2.5 hours per day). In the population of all Americans, it is estimated that the variation of the time spent watching television per month is 15.2 hours. Use this information to construct a 98% confidence interval to estimate the average time spent watching television per month for all Americans. A) 71.592...

The following data show the number of hours per day 12 adults spent in front of...

The following data show the number of hours per day 12 adults spent in front of screens watchin 4.3 4.5 7.4 1.3 5.7 4.6 3.4 7.9 2.2 5.1 1.7 8.3 a. Construct a 99% confidence interval to estimate the average number of hours per day adults s The 99% confidence interval to estimate the average number of hours per day adults spend (Round to two decimal places as needed.) b. What assumptions need to be made about this population? O...
) According to a certain survey, adults spend 2.252.25 hours per day watching television on a...

) According to a certain survey, adults spend 2.252.25 hours per day watching television on a weekday. Assume that the standard deviation for "time spent watching television on a weekday" is 1.931.93 hours. If a random sample of 6060 adults is obtained, describe the sampling distribution of x overbarx, the mean amount of time spent watching television on a weekday. x overbarx is approximately normal with mu Subscript x overbarμxequals= 2.25 and sigma Subscript x overbarσxequals=0.2491620.249162 . (Round to six...
The following data show the number of hours per day 12 adults spent in front of...

The following data show the number of hours per day 12 adults spent in front of screens watching television-related content. Complete parts a and below. 1.3 5.7 4.6 3.4 4.3 5.1 7.9 7.40 8.3 1.7 2.2 a. Construct a 99% confidence interval to estimate the average number of hours per day adults spend in front of screens watching television-related content. The 90% confidence interval to estimate the average number of hours per day adults spend in front of screens watching...

You see an article that claims that Americans spend an average of 5 hours per day...

You see an article that claims that Americans spend an average of 5 hours per day watching television with a standard deviation of 1 hour. a. Draw the distribution. b. Find the probability that a randomly selected person spends between 3 and 5 hours watching television. c. Find the percentage of people who spend more than 6 hours watching television. d. If a person is in the top 2.5%, what is the minimum amount of time that the person is...
According to a certain survey, adults spend 2.35 hours per day watching television on a weekday....

According to a certain survey, adults spend 2.35 hours per day watching television on a weekday. Assume that the standard deviation for "time spent watching television on a weekday" is 1.93 hours. If a random sample of 50 adults is obtained, describe the sampling distribution of x overbar, the mean amount of time spent watching television on a weekday. One consequence of the popularity of the Internet is that it is thought to reduce television watching. Suppose that a random...
The amount of time adults spend watching television is closely monitored by firms because this helps to determine adver...

The amount of time adults spend watching television is closely monitored by firms because this helps to determine advertising pricing for commercials. Complete parts (a) through (d). (b) According to a certain survey, adults spend 2.25 hours per day watching television on a weekday. Assume that the standard deviation for "time spent watching television on a weekday" is 1.93 hours. If a random sample of 60 adults is obtained, describe the sampling distribution of x, the mean amount of time...

Suppose that 14 children, who were learning to ride two-wheel bikes, were surveyed to determine how...

Suppose that 14 children, who were learning to ride two-wheel bikes, were surveyed to determine how long they had to use training wheels. It was revealed that they used them an average of seven months with a sample standard deviation of two months. Assume that the underlying population distribution is normal. a.) Construct a 99% confidence interval for the population mean length of time using training wheels. b.) (iii) Calculate the error bound. (Round your answer to two decimal places.)

One hundred eight Americans were surveyed to determine the number of hours they spend watching television...

Homework Answers

Add Answer to:
One hundred eight Americans were surveyed to determine the number of hours they spend watching television...

Post as a guest

Earn Coins