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# Lecture27 - ECO220Y Lecture27 ectu Hypothesis Testing(4...

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ECO220Y Lecture27 CO220 ectu e2 Hypothesis Testing (4) Migiwa Tanaka Reading: 11:2 1

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utline Outline Testing population mean when the population variance is known Two Approaches to Hypothesis Testing Rejection Region Method p-value Method ne il vs two il Test One-tail vs. two-tail Test Calculating the probability of a type II error 2
One-tailed and Two-tailed tests One Tailed Test Two Tailed Test The alternative includes direction sign, < or >. The alternative includes “ not equal to” sign, . H 0 : μ=50, H 1 : μ>50, or H 1 : μ<50 H 0 H : μ 50. greater, smaller, higher, lower, poorer, richer 1 different, changed, disparity Which type of test is appropriate when researcher wants to test: ) if the accumulation of physical capital helps economic growth? (1) if the accumulation of physical capital helps economic growth? (2) if there is any relationship between children’s nutrition intake and their academic achievement.? 3

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Application: estaurant Franchise and Profitability Restaurant Franchise and Profitability You have a fast food restaurant. Break-even: the number of pedestrian passing on the street is 130 per hour. When you started the restaurant, the pedestrian traffic was break-even level. . Has the traffic changed in recent years?
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Lecture27 - ECO220Y Lecture27 ectu Hypothesis Testing(4...

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