Consider the experiment of dropping 5 thumb tacks and noting how each tack lands: either point up or point down.
1.Let X = number of tacks that land point down out of the 5.
Assuming that the tacks are fair, complete the probability distribution below.
x p(x)
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2. Suppose you obtain 50,000 of these tacks all made at the same location by the same manufacturer. You take 5 tacks at a time, drop them, and record X = the number of tacks that land point down. You then obtain a histogram of the 10,000 values of X. The histogram is shown in the attached pdf file below.
What would you conclude?
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