(A)Given the information above,what is and for this comparison? Also,does this represent a one-tailed or a two-tailed test? Explain your answer. (
B)What are the degrees of freedom for the t-statistic in this calculation? Explain how you would calculate the degrees of freedom in this case. (
C)What is the assumption in this case that allows you to use the pooled standard deviation for this test? (
D)Using a 5% level of significance,is there sufficient evidence for Q-Mart to conclude that customers who use the Q-Mart card charge,on average,more than those who use another charge card? Explain your answer. (
E)Using a 1% level of significance,is there sufficient evidence for Q-Mart to conclude that customers who use the Q-Mart card charge,on average,more than those who use another charge card? Explain your answer.

Question

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The Answer of (A)Given the information above,what is and for this comparison? Also,does this represent a one-tailed or a two-tailed test? Explain your answer. (
B)What are the degrees of freedom for the t-statistic in this calculation? Explain how you would calculate the degrees of freedom in this case. (
C)What is the assumption in this case that allows you to use the pooled standard deviation for this test? (
D)Using a 5% level of significance,is there sufficient evidence for Q-Mart to conclude that customers who use the Q-Mart card charge,on average,more than those who use another charge card? Explain your answer. (
E)Using a 1% level of significance,is there sufficient evidence for Q-Mart to conclude that customers who use the Q-Mart card charge,on average,more than those who use another charge card? Explain your answer.

(A)Given the Information Above,what Is and for This