Using the proper symbols, write the null and alternative hypotheses for each scenario below. a) The Sleep Foundation says that adults should get at least 7 hours of sleep a night. A researcher surveyed 25 students from a small college is Maine and asked, among other things, how much sleep they got the night before. The sample had a mean of 5.6 and a standard deviation of 0.72. Is this evidence that the average amount of sleep that college students get is less than the recommended amount?b) A diet guide says that you will get an average of 120 calories from a serving of vanilla yogurt. Consumer Reports tested 11 brands of vanilla yogurt and found the mean to be 132 with a standard deviation of 6.32. Is this evidence that what the diet guide claims is different from what the researchers found?
Using the proper symbols, write the null and alternative hypotheses for each scenario below.
a) The Sleep Foundation says that adults should get at least 7 hours of sleep a night. A researcher surveyed 25 students from a small college is Maine and asked, among other things, how much sleep they got the night before. The sample had a mean of 5.6 and a standard deviation of 0.72. Is this evidence that the average amount of sleep that college students get is less than the recommended amount?
b) A diet guide says that you will get an average of 120 calories from a serving of vanilla yogurt. Consumer Reports tested 11 brands of vanilla yogurt and found the mean to be 132 with a standard deviation of 6.32. Is this evidence that what the diet guide claims is different from what the researchers found?
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