Task 1. Formulate the Null (H,) and alternative (Ha) hypotheses of the following researdproblems. Identify if the hypothesis test is one-tailed left directional test, one-tailed rigdirectional test or a two-tailed non directional test.:1.A psychologist wants to know how depression affects work performance.(HO):(На):Hypothesis test:2.A researcher wants to know if there is a link between the number of hours spent in playingonline games and obesity.(HO):(На):Hypothesis test:3.A drug company alleges that the average time for a cough syrup to take effect is 15 minutes.(HO):(Ha):Hypothesis test:4.A researcher wants to know if there is relationship between driver's age and the number ofaccidents he or she had last year.(но:(На):Hypothesis test:_5.A teacher wants to know if there is significant difference in the academic performancebetween male and female students enrolled in Statistics.(HO):(На):Hypothesis test: ASSESSMENTApply the steps in hypothesis testing for each problem.1. Two rival manufacturers of penlight batteries claimed that their product lasts longer than the other.Thirty samples of Brand A and thirty-four of Brand B were tested. The following are the lengths oflives of such batteries recorded in hours. Use a = 0.05.Brand A38 41 4235 4036 39 41 43 35 36 38 42 39 4043 4439374042 443837414038 424541Brand B38 40 4139 40 45 40 38 42 41 40 36 37 41 42 | 40 36 38 | 41 4043 39 41 40 43 39 384043 44 39 40 | 41 | 422. A teacher wants to find out if there is a significant difference in the academic performance of twogroups of students. One group meets thrice a week while the other meets twice a week. Below arethe final exam scores of the two groups. Use a = 0.01.3x/wk | 80 | 8566 | 80 | 77 | 75 | 95 | 66 | 55 | 79 | 8574 75 65872x/wk66988485565925534566 | 52

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Description: Task 1. Formulate the Null (H,) and alternative (Ha) hypotheses of the following researdproblems. Identify if the hypothesis test is one-tailed left directional test, one-tailed rigdirectional test or a two-tailed non directional test.:1.A psycholog

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1. A psychologist wants to know how depression affects work performance. (HO): (Ha): Hypothesis test: 2. A researcher wants to know if there is a link between the number of hours spent in playing online games and obesity. (но: (Ha): Hypothesis test: 3. A drug company alleges that the average time for a cough syrup to take effect is 15 minutes. (но: (На):

1. A psychologist wants to know how depression affects work performance. (HO): (Ha): Hypothesis test: 2. A researcher wants to know if there is a link between the number of hours spent in playing online games and obesity. (но: (Ha): Hypothesis test: 3. A drug company alleges that the average time for a cough syrup to take effect is 15 minutes. (но: (На):

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter4: Equations Of Linear Functions

Section4.5: Correlation And Causation

Problem 18HP

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