Mary tossed a coin 100 times and got 42 heads. We wish to test if the coin is "fair", meaning the probability o getting a head or tail has equal probability. a. What is the hypothesis we want to test? Ho: p = 0.5 Ho: p = 0.5 Ho:p = 0.5 Ho: p = 0.5 Ha: p > 0.5 Ha: p < 0.5 Ha: p = 0.5 Ha: p = 0.5 b. What is the sample proportion of heads? Round to 4 places. C. Compute the Test Statistic. Z = Round to 4 places.

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