Question

statistic. Include: Test used, hypothesis, conditions, test statistic and p-value, conclusion 1. The builders of condominiums claim that the total room area of the condos is 1500 ft2. A random sample of 35 condos show taht the average total area is 1,488 ft? with a standard deviation of 2425 ft? Is there evidence at the 5% significance level that the condos have less area the advertised number? 2, A radio station claims that 25% of all radios in the city listen to their morning show (6am to 10am). You randomly call 60 people and ask what station they are listening to and find that 10 people are listening to the morning show. Find and interpret a 90% confidence interval. 3. A swimming school wants to determine whether a recently hired instructor is working out. Sixteen out of 25 of Instructor A's students passed the lifeguard certification test on the first try. In comparison, 57 out of 72 of more experienced Instructor B's students passed the test on the first try. Is Instructor A's success rate worse than Instructor B's? Use ? 0.05. 4. The Macintosh Leopard operating system is advertised to be faster than the PC Vista

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Answer 1