Question: 21. The true average diameter of ball bearings of a certain type is supposed to be .5 in. A one-sample t test will be carried

21. The true average diameter of ball bearings of a certain type is supposed to be .5 in. A one-sample t test will be carried out to see whether this is the case. What conclusion is appropriate in each of the following situations?

a. n 13, t 1.6, .05

b. n 13, t 1.6, .05

c. n 25, t 2.6, .01

d. n 25, t 3.9

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