Question Help ▼A car company says that the mean gas mileage for its luxury sedan is at least 21 miles per gallon (mpg). You believe the claim is incorrect and find that a random sample of 7 cars has a mean gas mileage of 20 mpg and a standard deviation of 3 mpg. Ata= 0.025, test the company's claim. Assume the population is normally distributed.Click here to view the t-distribution tableClick here to view page 1 of the normal tableClick here to view page 2 of the normal tableWhich sampling distribution should be used and why?O A. Use a t-sampling distribution because the population is normal, and o is unknown.O B. Use a t-sampling distribution because the population is normal, and o is known.C. Use a normal sampling distribution because the population is normal, and o is unknown.O D. Use a normal sampling distribution because n>30E. Use a t-sampling distribution because n <30.O F. Use a normal sampling distribution because the population is normal, and o is known.State the appropriate hypotheses to testO A. Ho H 21Ο Β. H μ21H µ<21Ha H=21OC. Ho HS21O D. Ho H=21Ha H>21H, u#21What is the value of the standardized test statistic?The standardized test statistic is(Round to two decimal places as needed.)What is the critical value?The critical value is (Round to three decimal places as needed.)Click to select your answer(s).P Type here to search1:04 AM4/23/202118(12pausebreakpri scsysrqdeleteanserthome3uped68backspacenum Ikscr ikP7.homeనాcoosfockSsH4.5.shift O2.altcird Question Helpcompany says that the mean gas mileage for its luxury sedan is at least 21 miles per gallon (mpg). You believe the claim is incorrect and find that a random sample of 7 cars has a mean gas mileage of 20 mpg and a standard deviation of 3 mpg. At025, test the company's claim. Assume the population is normally distributed.here to view the t-distribution table.here to view page 1 of the normal tablek here to view page 2 of the normal tableC. Use a normal sampling distribution because the population is normal, and o is unknown.O D. Use a normal sampling distribution because n> 30.OE. Use a t-sampling distribution because n< 30.O F. Use a normal sampling distribution because the population is normal, and o is known.State the appropriate hypotheses to test.O A. Ho H#21Ha H=21Ο Β . H μ>21Ha H<21OC. Ho Hs21O D. Ho H=21Ha H 21Ha H>21What is the value of the standardized test statistic?The standardized test statistic is(Round to two decimal places as needed.)What is the critical value?The critical value is(Round to three decimal places as needed.)What is the outcome and the conclusion of this test?V Ho At the 25% significance level, there isevidence tothe car company's claim that the mean gas mileage for the luxury sedan is at least 21 miles per gallonClick to select your answer(s).P Type here to search1:04 AM4/23/20211910412pausebreakprt scsystqhomedelete1nsert560809backspaceScr IkEUP7H.Kenter4.

Given: Sample size n = 7 Sample mean = x bar = 20mpg sample standard deviation = s = 3mpg level of…

Which sampling destribution should be used and why? O A. Use atsampling distribution because the population is normal, and a is unknown OC. Use a nomal sampling distribution because the population is normal, and o is unknown OE Use at-sampling distribution because n<30 O B. Use a t-sampling distribution because the population is normal, and o is known OD. Use a normal samping distribution because n 30 OF Use a normal sampling distribution because the population is normal, and a is known State the appropnate hypotheses to test OA H +21 OB. He p21 H, u-21 H u<21 OC H s21 H, 21 OD. H 21 H, 21 What is the value of the standardized test statistic? The standardzed test statistic is (Round to two decimal places as needed) What is the cntical value? The crtical value is Round to three decmal places as needed ) Click to select your answer(s).

Which sampling destribution should be used and why? O A. Use atsampling distribution because the population is normal, and a is unknown OC. Use a nomal sampling distribution because the population is normal, and o is unknown OE Use at-sampling distribution because n<30 O B. Use a t-sampling distribution because the population is normal, and o is known OD. Use a normal samping distribution because n 30 OF Use a normal sampling distribution because the population is normal, and a is known State the appropnate hypotheses to test OA H +21 OB. He p21 H, u-21 H u<21 OC H s21 H, 21 OD. H 21 H, 21 What is the value of the standardized test statistic? The standardzed test statistic is (Round to two decimal places as needed) What is the cntical value? The crtical value is Round to three decmal places as needed ) Click to select your answer(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

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please help with the question in the screenshot attached