Have you read the testing instructions and policies given above in Honorlock under Quiz Instructions? [answer] The exam requires that you have an external webcam placed on its stand about 4 feet away from your work area and 10 inches above your work surface so that your entire workspace to include your hands, papers, entire desk, computer, computer screen, and face is visible in Honorlock during the entire exam. Is your external webcam setup correctly? [answer1] According to the testing instructions and policies, if my webcam view in Honorlock is comparable to one of the eight pictures above showing an unsatisfactory workspace view, I will receive a [answer3].  Does your workspace view in Honorlock mimic one of three pictures shown above that demonstrate what a satisfactory workspace should look like? [answer2] Please keep in mind that this is your is your last chance to correct your external webcam view in Honorlock, so please make any necessary adjustments now so you don’t receive a zero on the exam or for the course. Finally, your formula sheets are located in the next question.  Good luck on the exam!

The pooled variance will be closer to whichever variance is larger, regardless of the sample sizes.

What conclusion can you draw from the result of the t-test presented below?  

When comparing two groups using an independent samples t-test, you must ensure that these groups are equal in size. Otherwise, you cannot use this t-test.

What do you do when the homogeneity of variance assumption is violated in a t-test?

Which of the following is not true about a confidence interval?

Compute the pooled variance, the estimated standard error of the mean difference, and the t statistic. s2p = [color1] s(M1 – M2) = [color2] t = [color3] Note: Round up to two decimals when necessary.

Suppose a researcher wants to decrease the width of the confidence interval. What are two ways in which this can be accomplished?

The difference between a one-sample and independent-samples t-test is that when using the latter we are __________ .

State the null and the alternative hypotheses using symbols.