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Question 1: Resting pulse rates for a random sample of 26 smokers had a mean of 80 beats per minute (bpm) and a standard deviation of 5 bpm. Among 32 randomly chosen nonsmokers, the mean and standard deviation were 74 and 6 bpm, respectively. Both sets of data were roughly symmetric and had no outliers. Let x¯S - x¯N be the difference in mean pulse rate between smokers and nonsmokers.
(a) What is the shape of the sampling distribution of x¯S - x¯N? Why?
(b) Find the mean difference. Explain
(c) Find the standard deviation of the difference. Explain.
Question 2: Oliver has to set up a study to determine how students in a high school feel about a schedule change. He must decide whether to use sample or a census. Describe both of these and how he could implement each one. Make sure to discuss a biased versus an unbiased sample.
Short Paper on Cross-cultural Opportunities and Conflicts in Canada.
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