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Question;A recent study by Allstate Insurance Co. finds that 82% of teenagers have used cell phones while driving (The Wall Street Journal, May 5, 2010). In October 2010, Massachusetts enacted a law that forbids cell phone use by drivers under the age of 18. A policy analyst would like to determine whether the law has decreased the proportion of drivers under the age of 18 who use a cell phone. Use Table 1 and Table 2.a. Select the null and the alternative hypotheses to test the policy analyst?s objective.H0: p = 0.82, HA: p? 0.82H0: p? 0.82, HA: p 0.82b. Suppose a sample of 200 drivers under the age of 18 results in 150 who still use a cell phone while driving. What is the value of the test statistic? What is the p-value? (Negative values should be indicated by a minus sign. Do not round intermediate calculations. Round "test statistic" to 2 decimal places and "p-value" to 4 decimal places.)Test statistic p-value c. At? = 0.05 has the law been effective?YesNoTest using the critical value approach with? = 0.05.d-1.Calculate the critical value. (Negative value should be indicated by a minus sign. Round your answer to 2 decimal places.)Critical value d-2. Interpret the results.Reject H0Do not reject H0

Paper#62457 | Written in 18-Jul-2015

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