Last year, ABC Co employees worked on average 7 hours per day. This past month, a...

Transcribed Image Text:

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) Η :μ < 65, Η μ < 6,5 (c) Ho: <7, Ha: #27 (d) Η :μ 27,Η :μ < 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: 1-₂ ≤0 (b) Ho: 1-2 <0, Ha: ₁-₂ > 0 (c) Ho: 1-2 ≤0, Ha: 1-2 > 0 (d) Ho: ₁-2=0,Ha: P₁ - ₂0 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% 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) Η :μ < 65, Η μ < 6,5 (c) Ho: <7, Ha: #27 (d) Η :μ 27,Η :μ < 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: 1-₂ ≤0 (b) Ho: 1-2 <0, Ha: ₁-₂ > 0 (c) Ho: 1-2 ≤0, Ha: 1-2 > 0 (d) Ho: ₁-2=0,Ha: P₁ - ₂0 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%

Answer rating: 100% (QA)

Th sj Fleece 6 H HI Hypothesis 7 Hyu H based ... View the full answer