The next seven questions refer to the following scenario:A random sample of 16 Porsche drivers yielded an average age of 50 years with a variance of 9 years and a randomsample of also 16 Ferrari drivers yielded an average of 47 years with a variance of 25 years.Porsche DriverFerrari Drivern1616mean5047Variance25Conduct the following hypothesis test at a=0.05.HO: Mean Age Porsche Drivers< Mean Age Ferrari DriversHA: Mean Age Porsche Drivers > Mean Age Ferrari DriversAssume unequal variance. What is your test-statistic? tTestO 2.058O2.508O 2.805O 2.850

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Answered: The next seven questions refer to the…

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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A new study has found that, on average, 6- to 12-year-old children are spending less time on household chores today compared to 1981 levels. Suppose two samples representative of the study's results report the following summary statistics for the two periods. 1981 Levels 2008 Levels 24 minutes 19 minutes 51 = 3.5 minutes 52 - 4.3 minutes ni = 30 n2 - 30 Which of the following is the correct value of the test statistic assuming that the unknown population variances are equal? Multiple Cholce Z = -4.94 tss = 4.94 Z = 4.94 t59 = -4.94
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A study was conducted using 50 mobile network users who volunteered to participate in a research as the entry of the third telco player in the country is on its way. One of the variables studied was the data connection speed in the previous month. Based on the data in the following table, is there a significant difference between the connectivity speeds of the two present mobile networks during the previous month? Use a 5% level of significance and assume that the population variances are equal. 1. The alternative hypothesis for the test would be? 2. The alternative hypothesis for the test would be? 3. What is the computed value of the test statistic? 4. What would be your decision?
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