Understanding Basic Statistics 6th Edition by Charles Henry Brase,Corrinne Pellillo Brase

Exercise 68

Please provide the following information for Problems 7-12:
(a) What is the level of significance State the null and alternate hypotheses.
(b) Check Requirements What sampling distribution will you use What assumptions are you making Compute the sample test statistic.
(c) Find (or estimate) the P -value. Sketch the sampling distribution and show the area corresponding to the P -value.
(d) Based on your answers in parts (a)-(c), will you reject or fail to reject the null hypothesis Are the data statistically significant at level
(e) Interpret your conclusion in the context of the application.
Note: Answers may vary due to rounding.
Political Science: Voters This problem is based on information taken from The Rating Guide to Life in America's Fifty States , by G. S. Thomas. A random sample of n 1 = 288 voters registered in the state of California showed that 141 voted in the last general election. A random sample n 2 = 216 registered voters in the state of Colorado showed that 125 voted in the most recent general election. Do these data indicate that the population proportion of voter turnout in Colorado is higher than that in California Use a 5% level of significance.