SOLUTION: A coin was flipped 60 times and came up heads 38 times. (a)At the .10 level of significance, is the coin biased toward heads? Show your decision rule and calculations. (b) Calculat

Algebra ->  Probability-and-statistics -> SOLUTION: A coin was flipped 60 times and came up heads 38 times. (a)At the .10 level of significance, is the coin biased toward heads? Show your decision rule and calculations. (b) Calculat      Log On


   

Question 147461: A coin was flipped 60 times and came up heads 38 times. (a)At the .10 level of significance, is the coin biased toward heads? Show your decision rule and calculations. (b) Calculate a p-value and interpret it.
Answer by stanbon(75887) About Me  (Show Source):
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A coin was flipped 60 times and came up heads 38 times.
(a)At the .10 level of significance, is the coin biased toward heads? Show your decision rule and calculations.
Ho: p = 0.5
Ha: p > 0.5
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I ran a 1-Prop ZTest and got the following:
Test statistic: 2.0656...
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(b) Calculate a p-value and interpret it.
p-value = 0.019433...
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Interpretation: Only slightly more than 1.9% of test results could show
stronger support for rejecting Ho.
Conclusion: Since p-value is less than 10%, reject Ho.
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Cheers,
Stan H.