AP Statistics Quiz
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INFERENCE FOR CATEGORICAL DATA: CHI-SQUARE
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A school district predicts that the distribution of students' primary mode of transportation is 40% bus, 35% car, and 25% walk/bike. A random sample of 120 students is surveyed, and a chi-square goodness-of-fit test is conducted at α=0.05\alpha=0.05. The summary is below. What conclusion is appropriate? Observed/Expected counts and p-value: - Bus: Observed 44, Expected 48 - Car: Observed 39, Expected 42 - Walk/Bike: Observed 37, Expected 30 - p-value = 0.18
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