Question: A penny was spun on a hard, flat surface 50 times, and the result was 15 heads and 35 tails. Using a chi-square test for

A penny was spun on a hard, flat surface 50 times, and the result was 15 heads and 35 tails. Using a chi-square test for goodness of fit, test the hypothesis that the coin is biased, using a 0.05 level of significance.

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