A ski lodge manager observes the weather for the month of February. If his customers are able to ski, he records S; if weather conditions do not permit skiing, he records N. Test for randomness, at α = 0.05.
Answer to relevant Questionsn = 30, α = 0.01 Find the critical r value (assume that the test is two-tailed). Find the Spearman rank correlation coefficient for the following data, which represent the number of hospitals and nursing homes in each of seven randomly selected states. At the 0.05 level of significance, is there enough ...A tire manufacturer claims that the median lifetime of a certain brand of truck tires is 40,000 miles. A sample of 30 tires shows that 12 lasted longer than 40,000 miles. Is there enough evidence to reject the claim at α = ...List the advantages and disadvantages of random sampling. For each of the studies in Exercise 17, suggest possible confounding variables.
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