The true average diameter of ball bearings of a certain type is supposed to be 0.5 inch. What conclusion is appropriate when testing Ho: μ = 0.5 versus H₂: μ ± 0.5 inch in each of the following situations? (a) n = 12, t = 1.8, α = 0.05 (b) (c) (d) Reject Ho Fail to reject Ho n = 12, t = -1.8, α = 0.05 Reject Ho Fail to reject Ho n = 26, t = -2.6, a = 0.01 Reject Ho Fail to reject Ho n = 26, t = -3.6 ☐ Reject Ho at any reasonable significance level Fail to reject Ho at any reasonable significance level

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