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Finding the value of test statistic using two-tail 't' test and interpret the result.
The Commercial Bank and Trust Company is studying the use of its automatic teller machines (ATMs). Of particular interest is whether young adults (under 25 years) use the machines more than senior citizens. To investigate further, samples of customers under 25 years of age and customers over 60 years of age were selected. The number of ATM transactions last month was determined for each selected individual, and the results are shown below. At the .01 significance level, can bank management conclude that younger customers use the ATMs more?
Beat
Time (minutes)
Prada (Italy)
12.9
12.5
11
13.3
11.2
11.4
11.6
12.3
14.2
11.3
Oracle (U.S.A)
14.1
17.4
15.8
16.7
16.1
13.4
13.6
10.8
19
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