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For n = 9 and p = 0.5, which two values are both most probable?

A4 and 6
B3 and 4
C5 and 6
D4 and 5
Answer & Solution
Correct answer: D. 4 and 5
(n + 1)p = 5 is an integer, so the values 5 and 4 tie as the modes.
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