Solution-
The hypothesis test is T test for two samples is used for this problem and performed using statistical calculator.
Summary and test statistics
The t-value is 0.58422. The p-value is 0.566324. The result is not significant at p < 0.05.
Hence, There is no evidence to suggest that the two type of drill bits wear differently.
B)
The t-value is 0.5839. The p-value is .2810. The result is not significant at p < .01.
Hence, Drill Bit 2 has not significantly less than Drill Bit 1.
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