Last year, ABC Co employees worked on average 7 hours per day This past month, a sample of 100 workers shows an average daily work time of 6 5 hours with a standard deviation of 5 hours Are employees working less time this year compared to last year Choose the correct hypothesis (a) Ho 6 5, Ha 26 5 (b) 65, 6,5 (c) Ho 7, Ha 27 (d) 27, 7 Does the Chicago airport (population 1) handle more flights than the Atlanta airport (population 2) Select the correct hypothesis (a) Ho 1 1220, Ha 1 0 (b) Ho 1 2 0, Ha 0 (c) Ho 1 2 0, Ha 1 2 0 (d) Ho 2 0,Ha P 0 Are AT T customers older than Verizon customers If the 95 confidence interval for the difference between the two populations is 3,7 , which of the following is FALSE (a) AT T customers are older than Verizon customers at 95 confidence (b) The point estimate for the difference between the two populations is 4 (c) There is a 2 5 chance that the difference between AT T age and Verizon age is less than 3 (d) The significance level for this problem is 5

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Last year, ABC Co employees worked on average 7 hours per day. This past month, a sample of 100 workers shows an average daily

Last year, ABC Co employees worked on average 7 hours per day. This past month, a sample of 100 workers shows an average daily work time of 6.5 hours with a standard deviation of .5 hours. Are employees working less time this year compared to last year? Choose the correct hypothesis. (a) Ho:

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