1. When the means of two unrelatedsamples are used to compare two populations, w
ID: 2915526 • Letter: 1
Question
1. When the means of two unrelatedsamples are used to compare two populations, we are dealing withtwo dependent means ___ T/F
2. If s is unknown whencompleting a hypothesis test about the population mean, then thebest estimate for the unknown standard deviation is s._____ T/F
3. The number of degrees of freedom forthe critical value of t is equal to the smaller ofn1 -1 or n2 -1 when makinginferences about the difference between two independent means forthe case when the degrees of freedom are estimated. ___T/F
4. Pretest versus post-test (beforeversus after) studies are usually independent samples. ____ T/F
5. The chi-square distribution is usedfor inferences about the population mean m when thestandard deviation s is unknown. ____ T/F
6. The t-distribution is usedfor all inferences about a population’s variance. ___ T/F
7. The F distribution is asymmetric distribution. ____ T/F
Explanation / Answer
1. When the means of two unrelatedsamples are used to compare two populations, we are dealing withtwo dependent means ___ T/F
2. If s is unknown whencompleting a hypothesis test about the population mean, then thebest estimate for the unknown standard deviation is s._____ T/F
3. The number of degrees of freedom forthe critical value of t is equal to the smaller ofn1 -1 or n2 -1 when makinginferences about the difference between two independent means forthe case when the degrees of freedom are estimated. ___T/F
4. Pretest versus post-test (beforeversus after) studies are usually independent samples. ____T/F
5. The chi-square distribution is usedfor inferences about the population mean m when thestandard deviation s is unknown. ____ T/F
6. The t-distribution is usedfor all inferences about a population’s variance. ___T/F
7. The F distribution is asymmetric distribution. ____ T/F
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