# Coin Toss: Hypothesis Testing

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.

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#### Solution Preview

The answer is in the attached Excel file.

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.

(a) At the .10 level of significance, is the coin biased toward heads? Show your decision rule and calculations.

Data

Hypthesized proportion= 50% (no bias)

Sample proportion= 63.33% =38/60

Sample size= 60

Significance level= 0.02

1) Hypothesis

Null Hypothesis: Ho: ...

#### Solution Summary

This solution determines the hypotheses, decision rule, and sample statistics in order to compare it to the critical value and come to a decision regarding whether the coin is biased. An Excel file is attached.