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15. What is the probability that we commit a type one error during the test of the claim that males have a mean height equal to 68 inches conducted at the 10% sig. level?
A. at most 0.10
B. at least 0.10
C. at most 0.05
D. exactly 0.05
E. less than 0.05
F. exactly 0.10

F. exactly 0.10