We have a box with N tickets. We take a sample, drawing n tickets at random from

Question

We have a box with N tickets. We take a sample, drawing n tickets at random from the box with replacement (n < N). We don't have the mean or SD of the box itself. Then, since the box SD is unknown, we cannot perform any statistical analysis on the sample. True or False We have a box with N tickets. We take a sample, drawing n tickets at random from the box with replacement (n < N). We don't have the mean or SD of the box itself. Then, since the box SD is unknown, we cannot perform any statistical analysis on the sample. True or False We have a box with N tickets. We take a sample, drawing n tickets at random from the box with replacement (n < N). We don't have the mean or SD of the box itself. Then, since the box SD is unknown, we cannot perform any statistical analysis on the sample. True or False We have a box with N tickets. We take a sample, drawing n tickets at random from the box with replacement (n < N). We don't have the mean or SD of the box itself. Then, since the box SD is unknown, we cannot perform any statistical analysis on the sample. True or False 1 pts Question 4 A researcher has two independent samples from two populations A and B. Her null hypothesis is that the population averages are the same. She performs a z-test, using the z-score of the difference of the sample averages (average(A)- average(B) as her test statistic. The value of the statistic is about 1.8. This difference is statistically significant if her alternative hypothesis is: The population average of A is different from the population average of B O It will be statistically significant for neither of the above alternative hypotheses 0 It will be statistically significant for either of the above alternative hypotheses. O The population average of A is greater than the population average of B

Explanation / Answer

Since there is nothing mentioned about whether population A is greater than or lesser than popolation B, our alternate hypothesis has to be the 1st option: The population average of A is different from the population average of B.

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