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

question 49

Essay

(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.

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Definitions:

Assumption Of Risk

A legal defense that claims an individual knowingly and voluntarily assumed the risks inherent to a dangerous activity or condition.

Negligence Lawsuit

A legal action brought against an individual or entity for causing harm through careless actions or a failure to act when there was a duty to do so.

Heart Attack

A medical emergency condition occurring when the flow of blood to the heart is blocked, leading to damage of the heart muscle.

Reasonable Care

refers to the degree of caution and concern an ordinarily prudent person would use in similar circumstances to avoid harm or injury to others.