STA STA2023 (STA STA2023)

MATH 225N Unit 7.1 Developing Hypothesis and understanding Possible Conclusions>Question: Which type of test is used in the following scenario: The mean cutting rate of two competing table saws is to be compared. Fourteen cuts are randomly selected and measured for cutting speed to test if the speeds were different from each other. Both populations have normal distributions with known standard deviation. Answer: The hypothesis is two-tailed because the alternative hypothesis is Ha:μ1≠μ2...

STATISTICS UNIT 7 EXAMPLES GRADED<>Which graph below corresponds to the following hypothesis test? H0:μ≥5.9, Ha:μ<5.9 The alternative hypothesis, Ha, tells us which area of the graph we are interested in. Because the alternative hypothesis is μ<5.9, we are interested in the region less than (to the left of) 5.9, so the correct graph is the first answer choice. Question: Jolyn, a golfer, claims that her drive distance is not equal to 222 meters, on average. Several of her friend...