STAT 250 (3) Quiz: Chapter 8 Review Quiz Time Limit: 01.3000 Subm Quz This Quest

Question

STAT 250 (3) Quiz: Chapter 8 Review Quiz Time Limit: 01.3000 Subm Quz This Question: 1 pt This Quiz: 13 pts A taste test is done to see whether a person can tell l Soda X from Soda Y. In each case, 26 random and independent trials are done (half with Soda X and half with person determines whother she or he is drinking Soda X or Soda Y. One person gots 16 right out of 26 tials. hich graph shown below is the to test the 1-PropZTest 01197 z=1 1767 1-PropZTest z-1.1767 p 02393 | aperson that can telte difference between the sodas would have a Graph| |is the correct figure because the alternative hypothesis should be if they were simply guessing

Explanation / Answer

Even if the person guesses between X and Y, there is a 0.5 probability that the person gets the Soda name correct. Therefore for that person to have the ability to tell if it is correct, the proportion should be higher. Therefore this should be an upper tailed test that is a one sided test.

Therefore the graph (B) is correct here.

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