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This quiz presents scenarios involving hypothesis testing in different contexts. First, we explore whether the percentage of high school graduates attending college has changed from the 1950s figure of 40%. Next, we evaluate a new soft drink flavor's acceptance, with a marketing plan hinging on at least 60% approval. Finally, we examine an automotive manufacturer's concern over a costly fix needed after 50,000 miles, seeking to confirm if a redesign reduced the issue from an initial 20%. Analyze the null and alternative hypotheses for each situation.
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Quiz 11.08.2012 Write the null and alternative hypothesis for the following: In the 1950s only about 40% of high school graduates went to college. Has the percentage changed? We field-test a new flavor soft drink, planning to market it only of we are sure that over 60% of the people like the flavor. 20% of cars of a certain model require a costly fix after 50,000 miles. The manufacture wants to know if a redesign has fixed this problem.
Quiz 11.08.2012 Write the null and alternative hypothesis for the following: In the 1950s only about 40% of high school graduates went to college. Has the percentage changed? Ho : p = 0.40Ha : p ≠ 0.40 We field-test a new flavor soft drink, planning to market it only of we are sure that over 60% of the people like the flavor.Ho : p = 0.60Ha : p > 0.60 20% of cars of a certain model require a costly fix after 50,000 miles. The manufacture wants to know if a redesign has fixed this problem.Ho : p = 0.20Ha : p < 0.20
