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Hypothesis test for single proportion.

A coin was flipped 60 times and came up heads 38 times.

a. At the 0.10 level of significance, is the coin biased toward heads? describe your decision rule and calculations.

b. find out a p-value and interpret it.

60 -38 = 0.633 Z.10 = 1.281

P (less than or equal to 2.576) = 0.9950

1 - 0.9950 = 0.00499

Confidence interval - proportion

 

99%

confidence level

 

0.633333333

proportion

 

60

n

 

2.576

z

 

0.160

half-width

 

0.794

upper confidence limit

 

0.473

lower confidence limit

 

 

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M920300

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