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A bank has an ATM installed inside the bank and is available to its customers only from 7 am to 6 pm Monday through

  

A bank has an ATM installed inside the bank and is available to its customers only from 7 am to 6 pm Monday through Friday. The manager of the bank wanted to investigate if the percentage of transactions made on this ATM is the same for each for five days (Monday through Friday) of the week. She randomly selected one week and counted the number of transactions made on this ATM on each of the five days during this week. The information she obtained is given in the table where the number of ATM users represents the number of transactions on this ATM on these days. Day Number Monday Tuesday Wednesday Thursday Friday of ATM Users 253 197 204 279 267 At 1% level of significance, can we reject the null hypothesis that the proportion of people who use this ATM each of the five days of the week is the same? Assume that this week is typical of all weeks in regard to the use of this ATM.

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