Watching TV: The 2012 general Social Survey asked a large number of people how much time they spent watching TV each day. The mean number of hourswas 3.09 with a standard deviation of 2.79. Assume that in a sample of 46 teenagers, the sample standard deviation of daily TV time is 2.6 hours, and that thpopulation of TV watching times is normally distributed. Can you conclude that the population standard deviation of TV watching times for teenagers is less tha2.79? Use the a=0.05 level of significance.Part: 0 / 5Part 1 of 5State the appropriate null and alternate hypotheses.Hoo (Choose one)H₁:This hypothesis test is a (Choose one) test.:0 (Choose one)Part: 1 / 5Part 2 of 5Find the critical value. Round the answer to three decimal places.For a=0.05, the critical value isXXŚŚ Compute the test statistic. Round the answer to three decimal places.2x² =Part: 3 / 5Part 4 of 5Determine whether to reject Ho.At the a=0.05 level, (Choose one)Part: 4 / 5XPart 5 of 5State a conclusion.Śthe null hypothesis Ho.XŚThere (Choose one)enough evidence to conclude that the population standard deviation of TV watching times forteenagers is less than 2.79 hours.XŚ

The question is about hypothesis testing.Given :Population standard deviation of time spent on…

Answered: Watching TV: The 2012 general Social…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Steel rods are manufactured with a mean length of 28 centimeters. because because of variability in the manufacturing process, the lengths of the rods are approximately normally distrubuted with a standard deviation of 0.06. Any rods that are shorter than 27.85 cm or longer than 28.15 cm are discarded. What proportion of rods will be discarded? Round to 4 decimal places.
Marian found that the average height of female students in her psychology class was 63 inches with a standard deviation of 2.2. Which statistic should she use to determine if the difference between her classmates' average height and the population mean of female adults (Mean = 64 inches; standard deviation = 3.5) is statistically significant.
Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation 20. Find Upper P 4 which is the IQ score separating the bottom 44% from the top 96%.
A simple random sample of 36 observations was taken from a large population. The sample mean and the standard deviation was determined to be 80 and 12 respectively. What is the standard error of the mean?
According to a marketing website, adults in a certain country average 51 minutes per day on mobile devices this year. Assume that minutes per day on mobile devices follow the normal distribution and has a standard deviation of 7 minutes. What amount of time spent today on mobile devices by an adult represents the 80th percentile?
The mean gas mileage for a hybrid car is 57 miles per gallon. Suppose that the gasoline mileage is approximately normally distributed with a standard deviation of 3.5 miles per gallon. What proportion of hybrids gets over 61 miles per gallon?
Most medical schools require applicants for admission to take the Medical College Admissions Test (MCAT) examination. Scores on the MCAT are roughly normally distributed with a mean of 500 and a standard deviation of 10.6. What percentage of students score above 518 points? ( write as a decimal and round to the nearest hundredth)
The amount of time a certain brand of light bulb lasts is normally distributed with a mean of 1300 hours and a standard deviation of 85 hours. What percentage light bulbs last between 1160 hours and 1240 hours, to the nearest tenth? Statistics Calculator
The lengths of brook trout caught in a certain Colorado stream are normally distributed with a mean of 14 inches and a standard deviation of 3 inches. What proportion of brook trout caught will be less than 18 inches in length?
A survey reported that in a recent year, the mean serum cholesterol level in milligrams per deciliter for US adults was 204 with a standard deviation of 37. A random sample of 116 adults was chosen. Find the 33rd percentile of the sample mean.
When Emma commutes to work, the amount of time it takes her to arrive is normally distributed with a mean of 53 minutes and a standard deviation of 5 minutes. What percentage of her commutes will be shorter than 62 minutes, to the nearest tenth? Statistics Calculator
If the weight of fertilizer in a 40-pound bag is normally distributed with a standard deviation of 0.5 pounds, what is the range of weights of bags of fertilizer within two standard deviations of the mean?

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS