iew History Bookmarks Window Help math x.com MA 480 QL On-Lure STATs for Nursing
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iew History Bookmarks Window Help math x.com MA 480 QL On-Lure STATs for Nursing a) Lindsey Bone Test: Practice Test 3 This Question: 1 pt 4 2 of 32 (9 complete) v This Test 32 pts po When should a paired t-test be performed instead of a two-sample t-test? choose the oorrect answer below O A. A paired t-test should be performed instead of a two-sample ttest when the observasons within each sample are dependent. B. Apained ttest should be performed c. Apaired t-test should be performed instead of a two-samplettest when the variable ef interestis categorical instead two-sample ttest when each in one group has a dependenoe on a patoular observation in the o D. Apared ttest should be performed instead of a Mo sample t-est when the samples taken are independent ofeach other O E. Apaired t-test should be performed instead of a two-sample tuest when the sample sizes are small and data in each populason are not normaly Click to select your answer. MacBookExplanation / Answer
Option (C) is correct.
Ans : A paired t-test should be performed instead of two sample t-test when each oservation in one group has dependence on a perticular oservation in other group.
OR
Paired t-tests are generally used to compare the same sample at two different points in time, or after exposure to two different phenomena, such as patient systolic blood pressure at admission and at discharge.
Example:-1) I have been given data that includes 20 different households and what each household spends on grocery and restaurant. I need to run a t test and I'm not sure if I should use a paired t test or a 2 sample t test. Also what is the best way to graphically represent this data?
Ans:-In your case you have two measurements on each household. So spending from each household at the grocery store would be the first measurement and spending from each househould at the restaurant would be the second measurement. We then wish to compare these two measurements using the paired t-test.
2)A bulky person may be thiking to join a helth club for reducing his weight. He desires to test that after joining the helth club the average weights of participants gets reduced significantly or not.For this purpose we collect the data on the weights of participants before and after joining the helth club and then take decision wheather to join the club or not.
Ans:- In such cases paired t-test is used.
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