A coin was flipped 12 times and came up heads 10 times. (a) Would we be justified
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(a) Would we be justified in assuming that the sample proportion p is normally distributed? Explain.
(b) Calculate a p-value for the observed sample outcome, using the normal distribution. At the .05 level of significance in a right-tailed test, is the coin biased toward heads?
(c) Use Excel to calculate the binomial probability P(X ≥ 10 | n = 12, π = .50) = 1 – P(X ≤ 9 | n = 12, π = .50).
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Related Book For
Applied Statistics In Business And Economics
ISBN: 9780073521480
4th Edition
Authors: David Doane, Lori Seward
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