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Question 12.           Directors of a company claim that 90% of the workforce supports a new shift           pattern that they have suggested. A random survey of 100 people in the        workforce finds 85 in favour of the new scheme. Test if there is a significant           difference between the survey results and the director's claim. 12.1    What

Question 12.           Directors of a company claim that 90% of the workforce supports a new shift           pattern that they have suggested. A random survey of 100 people in the        workforce finds 85 in favour of the new scheme. Test if there is a significant           difference between the survey results and the director's claim. 12.1    What

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Question 12.

          Directors of a company claim that 90% of the workforce supports a new shift           pattern that they have suggested. A random survey of 100 people in the        workforce finds 85 in favour of the new scheme. Test if there is a significant           difference between the survey results and the director's claim.

12.1    What kind of test will you perform?

          (a) 1 sample z-test                       (b) 1 sample t-test                                            (c) 1 sample proportion t-test       (d)  2 sample t-test

12.2    State the Alternative Hypothesis 

          (a)      H1: mu < 0.9                     (b)      H1: mu > 0.9

          (c)      H1: mu  0.9                     (d)      H1: mu 0.9

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Question 12. Directors of a company claim that 90% of the workforce supports a new shift pattern that they have suggested. A random survey of 100 people in the workforce finds 85 in favour of the new scheme. Test if there is a significant difference between the survey results and the director's claim. 12.1 What kind of test will you perform? (a) 1 sample z-test (c) 1 sample proportion t-test 12.2 State the Alternative Hypothesis H1: mu < 0.9 H1: mu ≤ 0.9 (a) (C) H1: mu > 0.9 H1: mu * 0.9 12.3 At what level of significance will you test the difference between the director's claim and the survey results? (a) alpha = 0.01 (b) alpha= 0.025 (c) alpha = 0.05 (d) alpha = 0.975 12.4 What kind of test in terms of the tails will you perform? Right -tailed (b) Left-tailed (a) (C) (b) 1 sample t-test (d) 2 sample t-test (b) (d) (a) (c) Two-tailed 12.5 Which value(s) indicate(s) the rejection region? (a) 1.96 (b) 1.645 (c) 1.782 12.6 If the test statistic = -1.67, referring to the rejection region and the test statistic, what will happen to the hypotheses? Reject HO Do not reject HO (b) (d) Reject H1 Do not reject H1
Transcribed Image Text:Question 12. Directors of a company claim that 90% of the workforce supports a new shift pattern that they have suggested. A random survey of 100 people in the workforce finds 85 in favour of the new scheme. Test if there is a significant difference between the survey results and the director's claim. 12.1 What kind of test will you perform? (a) 1 sample z-test (c) 1 sample proportion t-test 12.2 State the Alternative Hypothesis H1: mu < 0.9 H1: mu ≤ 0.9 (a) (C) H1: mu > 0.9 H1: mu * 0.9 12.3 At what level of significance will you test the difference between the director's claim and the survey results? (a) alpha = 0.01 (b) alpha= 0.025 (c) alpha = 0.05 (d) alpha = 0.975 12.4 What kind of test in terms of the tails will you perform? Right -tailed (b) Left-tailed (a) (C) (b) 1 sample t-test (d) 2 sample t-test (b) (d) (a) (c) Two-tailed 12.5 Which value(s) indicate(s) the rejection region? (a) 1.96 (b) 1.645 (c) 1.782 12.6 If the test statistic = -1.67, referring to the rejection region and the test statistic, what will happen to the hypotheses? Reject HO Do not reject HO (b) (d) Reject H1 Do not reject H1
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