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The billing department of a national cable service company is conducting a study of how customers...

The billing department of a national cable service company is conducting a study of how customers pay their monthly cable bills. The cable company accepts payment in person at a local​ office, by​ mail, by credit​ card, or by electronic funds transfer from a bank account. The cable company randomly sampled 400 customers to determine if there is a relationship between the​ customer's age and the payment method used. The accompanying sample results were obtained. Based on the sample​ data, can the cable company conclude that there is a relationship between the age of the customer and the payment method​ used? Conduct the appropriate test at the α=0.01 level of significance.

Payment Method 20-30 31-40 41-50 Over 50
In person 8 11 10 13
By mail 29 67 71 57
By credit card 25 19 4 7
By Funds Transfer 22 35 17 5

A) Calculate the test statistic

B) Calculate the p-value

math   Statistics-And-Probability   
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