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True or False: For any population proportion p, the standard deviation of the distribution of p (p-hat) - the standard error -gets smaller as we
True or False: For any population proportion p, the standard deviation of the distribution of p (p-hat) - the standard error -gets smaller as we take larger samples. Thus, the results of large samples are less variable than the results of small samples. Select one: O True O False A recent study demonstrated that about 0.4% of American women are red-green colorblind. This can be interpreted as meaning: O a. 4 out of every 1000 women will be colorblind. O b. In a group of 1,000 randomly selected women, about 4 will not be colorblind. O c. In a group of 1,000 randomly selected women, we would expect the proportion who are colorblind to be very close to 0.004. O d. In a group of 1,000 randomly selected women, exactly 4 will be colorblind. A tire manufacturer claims that one particular type of tire will last at least 50,000 miles. A group of angry customers does not believe this is so. They take a sample of 14 tires to test if the mean mileage of the tires is really less than 50,000. If p-value = 0.015, what decision should be made if testing at the o = 0.05 level? O a. Do not reject Ho and conclude that the tires were not performing as claimed. O b. Reject Ho and conclude that the tires were not performing as claimed. O c. Reject Ho and conclude that the mean tire life really is 50,000 miles. O d. Do not reject Ho and conclude that the mean tire life really is 50,000 miles
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