Lesson 13 Group Meeting Quiz
Question 3What requirements must be checked when conducting a hypothesis test comparing two means with independent samples? Mark all that apply.
Asimple random sample was drawn from each population.x¯is normally distributed for each group.μ>0The sample size must be the same for each group.
Question 4The test statistic for a hypothesis test comparing two means with independent samples is aZ-Scoret-scoreF-statisticQuestion 5Two samples are independent ifknowing which subjects will be in Group 1 determines which subjects will be in Group 2.knowing which subjects will bein Group 1 tells you nothing about which subjects will be in Group 2.For the next six questions, use the data file DentistOfficeBills.xlsx(Links to an external site.)This data represents a simple random sample of dental bills at a dentist office in Idaho Falls and a dentist office in Rexburg. Let μ1be the mean bill at the Idaho Falls office, and let μ2be the mean bill at the Rexburg office.
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