# STAT 200 MCQs (100% SOLUTION) - 94305

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Question 1.If the result of a hypothesis test for a proportion is statistically significant, then A) the population proportion must equal the null value. B) the null hypothesis is rejected. C) the alternative hypothesis is rejected. 2.Suppose a 95% confidence interval for p, the proportion of drivers who admit that they sometimes run red lights when no one is around, is 0.29 to 0.38. Which of the following statements is false? A) It is plausible that a majority of all drivers would admit that they sometimes run red lights when no one is around. B) A test of Ho: ? = 0.3 versus Ha: ?≠ 0.3 would not be rejected using a = 0.05. C) A test of Ho: ? = 0.5 versus Ha: ?≠ 0.5 would be rejected using a = 0.05. D) It is plausible that about 37% of all drivers would admit that they sometimes run red lights when no one is around. 3.Which of the following is not a correct way to state a null hypothesis? A) Ho: B) Ho: µ = 0.5 C) Ho: µ = 0 D) Ho: µd = 10 4.It is known that for right-handed people, the dominant (right) hand tends to be stronger. For left-handed people who live in a world designed for right-handed people, the same may not be true. To test this, muscle strength was measured on the right and left hands of a random sample of 15 left-handed men and the difference (left - right) was found. The alternative hypothesis is one-sided (left hand stronger). The resulting t-statistic was 1.90. Assuming the conditions are met, based on the t-statistic of 1.90 the appropriate conclusion for this test using ? = 0.05 and using T-Table is A) The results are statistically significant so the left hand appears to be stronger. B) The results are statistically significant so the left hand does not appear to be stronger. C) The results are not statistically significant so there is not enough evidence to conclude the left hand appears to be stronger. 5.The maximum distance at which a highway sign can be read is determined for a sample of young people and a sample of older people. The mean distance is computed for each age group. What is the most appropriate null hypot

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