1 Suppose in our sample results we find that males average drinking five soft dr
ID: 3365410 • Letter: 1
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1 Suppose in our sample results we find that males average drinking five soft drinks per week, compared with six soft drinks per week for females. In the ssence ef additional wnalys,w type of difference has been illustrated? b, d. statistical difference managerially important difference a difference of dispersion mathematical difference none of these 2. The hypothesis of the status quo is typically referred to as the type III alternative statistical null valid a. b. C. d. e. 3. When do you say the difference between two numbers is statistically significan a. as long as the two numbers are not exactly the same b. if the difference is large enough so that it is managerially important if the difference is mathematically different if the difference is observed over an extended period of time c. d. if the difference is large enough to be unlikely to have occurred because of chance or sampling error 4. In most statistical software packages, the t-test is often substituted for which test statistic a. chi-square test b· f-test c. -test d. one-way ANOVA e. cross-tabulation What is the meaning of testing a hypothesis at an alpha level of 0.057 a· There is 95% confidence that the observed results are due to sampling error b· The chances of not rejecting the null hypothesis when it is false is more or because of sample randomness. than 5%. There is a 95% chance that the observed result from the sample analysis will also occur in the population The probability of committing a Type II error is about 5%. There is 95% chance of a gamma error.Explanation / Answer
1> without and additional analysis it is simply a mathematical difference
option: d
2>we proceed test considering the null hypothesis to be true and then gather enough evidence to reject is, so the hypothesis of status quo is the null hypothesis
option: d
3> option : e (self explanatory)
4>option: b
because squareroot(F(1,n) ) is actually t(n)
5>option: c (self-explanatory)
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