4. The average and standard deviation of weekly wages of equine workers were previously known to...

4. The average and standard deviation of weekly wages of equine workers were previously known to be $500 and $82 respectively. A sample of 63 was randomly selected and the average net weekly wage was found to be $523. The union wished to test whether average wages had increased since new working regulations were introduced. There was no reason to consider that the variation in wages had changed from that previously known. If the test was conducted using the 10% level of significance, the critical value of the test statistic would be

a. 2.388 b. 1.28 c. 0.0398 d. 2.226

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orchestra answered 1 year ago

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