b.) Determine the critical value(s)c.) Construct a 95% confidence intervald.) calculate the p-value During the 2007-2008 decline in the housing market, it appeared that the average size of a newly constructed house fell. To investigate this trend, the square footages of a random sample of houses built in 2008 were compared to houses built in 2018. A random sample of 55homes built in 2008 had a sample mean of 2,459.3 square feet and a sample standard deviation of 769.6 square feet. A random sample of 50 homes built in 2018 had a sample mean of 2,223.2 square feet and a sample standard deviation of 747.1 square feet. Assume that thepopulation variances for the square footages of houses built in these two years are equal. Complete parts a through d.a. Using α = 0.05, perform a hypothesis test to determine if the average home constructed in 2008 was larger than a home built in 2018.Identify the null and alternative hypotheses. Choose the correct answer below.OA. H₂H₁-H₂ = 0H₁ H₁-H₂ #0C. Ho:H₁-H₂50H₁ H₁-H₂>0Calculate the test statistic, tCt(Type an integer or decimal rounded to two decimal places as needed.)OB. Ho H₁-H₂ 20H₁ H₁-H₂ <0OD. Holl-H270H₁ H₁-H₂=0

Given that: House built in 2008: x¯1=2459.3n1=55s1=769.6 House built in 2018:…

Answered: b.) Determine the critical value(s)…

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

Determine the statistical significance of the two independent variables. Assume a t-statistic with an absolute value greater than 2 is statistically significant. Show your work/thought process: a) Rotten Tomatoes ranking - b) With Seagal -
State, and briefly explain, whether the width of a confidence interval for one population proportion would decrease, increase, or remain the same as a result of each of the following changes (holding all other values constant): a) Decrease the sample b) Increase the value of the sample mean c) Reduce the value of a (alpha)
A New York Times article reported that a survey conducted in 2014 included 36,000 adults, with 3.68% of them being regular users of e-cigarettes. Because e-cigarette use is relatively new, there is a need to obtain today's usage rate. How many adults must be surveyed now if a confidence level of 90% and a margin of error of 3 percentage points are wanted? Complete parts (a) through (c) below. a. Assume that nothing is known about the rate of e-cigarette usage among adults. n = 752 (Round up to the nearest integer.) b. Use the results from the 2014 survey. n= (Round up to the nearest integer.)
Let p equal the proportion of triathletes who suffered a training-related overuse injury during the past year. Out of 330 triathletes who responded to a survey, 167 indicated that they had suffered such an injury during the past year. a) Use these data to give a point estimate of p.   b)Use these data to find a 90% confidence interval for p.   c) Do you think that the 330 triathletes who responded to the survey may be considered a random sample from the population of triathletes?
2. Use these results to derive the 90% confidence interval for the proportion of people who prefer Coke. State your answer as percentages, and round to the nearest tenth of a percent as needed. Show the caculator steps and inputs used.
A) State the hypothesis for this test B) construct a 95 % confidence interval about the sample mean of stocks traded in 2014 C) will the researcher reject the null hypothesis
A national air traffic control system handled an average of 47,896 flights during 29 randomly selected days in a recent year. The standard deviation for this sample is 6,425 flights per day. Complete parts a through c below. a. Construct a 99% confidence interval to estimate the average number of flights per day handled by the system. The 99% confidence interval to estimate the average number of flights per day handled by the system is from a lower limit of to an upper limit of. (Round to the nearest whole numbers.)
8.A 95% confidence interval for the population mean is calculated to be 75.29 to 81.45. If the confidence level is reduced to 90%, the confidence interval will: a) Become narrower b) Remain the same c) Become wider d) Double in size
In a 95% confidence interval, of the potential values below the mean will not be included in the interval, and of potential values above the mean will also not be included in the 95% CI. 95%; 5% 2.5%; 2.5% 5%; 5%
A study was done on proctored and nonproctored tests. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Proctored Nonproctored 42 30 34 - 77.24 88.62 10.83 22.29 a. Use a 0.05 significance level to test the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. What are the null and alternative hypotheses? O A. Ho: H1 = H2 H4: H1 # H2 O B. Ho: H1 =H2 H1: H1>H2 O D. Ho: H1 # H2 OC. Ho: H1 = H2 H1: H1

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

b.) Determine the critical value(s) c.) Construct a 95% confidence interval d.) calculate the p-value