The human resources department of a major corporation announced that the number of people interviewed by...
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The human resources department of a major corporation announced that the number of people interviewed by the corporation in one month has a mean of 101 and a variance, o, of 279. The management of the corporation suspects that the variance exceeds 279. A randorm sample of 22 months yielded a mean of 103 Interviews, with a variance of 483. If we assume that the number of people interviewed by the corporation in one month follows an approximately normal distribution, is there enough evidence to conclude, at the 0.05 level of significance, that the management's claim is correct? Perform a one-tailed test. Then fill in the table below. Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. (If necessary, consult a list of formulas.) The null hypothesis: The altemative hypothesis: 口口 The type of test statistic: (Choose one) ロ>ロ The value of the test statistic: (Round to at least three decimal places.) The critical value at the 0.05 level of significance: (Round to at least three decimal places.) Can we support the claim that the variance of number of people interviewed by the corporation in O Yes No one month exceeds 2797 Artivate The human resources department of a major corporation announced that the number of people interviewed by the corporation in one month has a mean of 101 and a variance, o, of 279. The management of the corporation suspects that the variance exceeds 279. A randorm sample of 22 months yielded a mean of 103 Interviews, with a variance of 483. If we assume that the number of people interviewed by the corporation in one month follows an approximately normal distribution, is there enough evidence to conclude, at the 0.05 level of significance, that the management's claim is correct? Perform a one-tailed test. Then fill in the table below. Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. (If necessary, consult a list of formulas.) The null hypothesis: The altemative hypothesis: 口口 The type of test statistic: (Choose one) ロ>ロ The value of the test statistic: (Round to at least three decimal places.) The critical value at the 0.05 level of significance: (Round to at least three decimal places.) Can we support the claim that the variance of number of people interviewed by the corporation in O Yes No one month exceeds 2797 Artivate
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2 O The null hypo thesis 249 Ho 1 s H o2279 The alternative hypoth... View the full answer
Related Book For
Statistics for Business Decision Making and Analysis
ISBN: 978-0321890269
2nd edition
Authors: Robert Stine, Dean Foster
Posted Date:
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