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Suppose the National Transportation Safety Board (NTSB) wants to examine the safety of compact cars, midsize cars, and full-size cars. It collects a sample of

Suppose the National Transportation Safety Board (NTSB) wants to examine the safety of compact cars, midsize cars, and full-size cars. It collects a sample of cars each of the cars types. The data below displays the frontal crash test performance percentages. Test whether there are statistical differences in the frontal crash test performance for each type of car.

Compact Cars Midsize Cars Full-Size Cars
95 95 93
98 98 97
87 98 92
99 89 92
99 94 84
94 88 87
99 93 88
98 99 89

What is the t statistic for the follow-up t-test for Compact Cars vs. Midsize Cars? (Round to 2 decimal places.)

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