Question 1:

Only 19% of registered voters voted in the last election. Will voter participation increase for the upcoming election? Of the 368 randomly selected registered voters surveyed, 73' of them will vote in the upcoming election. What can be concluded at the or = 0.01 level of significance? a. For this study, we should use Ztest for a population proporiion v V o\" b. The null and alternative hypotheses would be: H0: p v V = v V C] (please enter a decimal) o' o\" H1: p v V > v V C] (Please enter a decimal) o' o\" c. The test statistic -V = C] (please show your answer to 3 decimal places.) o' d. The p-value = C] (Please show your answer to 4 decimal places.} The average retirement age in America is 66 years old. Do small business owners retire at an older average age? The data below shows the results of a survey of small business owners who have recently retired. Assume that the distribution of the population is normal. 63, 69, 59, 72, 7'4, 63, 59, 66, 60, Y4, 59, TD, 74, 63 What can be concluded at the the o: = 0.05 level of significance level of significance? a. For this study, we should use Host for a population mean v V o\" b. The null and alternative hypotheses would be: 0' o\" o' o\" c. The test statistic -'/ = C] (please show your answer to 3 decimal places.) 6' d. The p-value = C] (Please show your answer to 4 decimal places.) The commercial for the new Meat Man Barbecue claims that it takes 13 minutes for assembly. A consumer advocate thinks that the assembly time is lower than 13 minutes. The advocate surveyed 15 randomly selected people who purchased the Meat Man Barbecue and found that their average time was 12.3 minutes. The standard deviation for this survey group was 2.1 minutes. What can be concluded at the the o: = 0.05 level of significance level of significance? a. For this study, we should use ttest for a population mean v V o\" b. The null and alternative hypotheses would be: 0' o\" o' o\" c. The test statistic -" = C] (please show your answer to 3 decimal places.) if d. The p-value = C] (Please show your answer to 4 decimal places.} The average salary in this city is $49,300. Is the average different for single people? 68 randomly selecte: single people who were surveyed had an average salary of $51 ,237 and a standard deviation of $3,720. What can be concluded at the o: = 0.05 level of significance? a. For this study, we should use ttest for a population mean v V o\" b. The null and alternative hypotheses would be: 0' o\" o' o\" o. The test statistic -'/ = C] {please show your answer to 3 decimal places.) 6' d. The p-value = C] (Please show your answer to 4 decimal places.) nu A The average house has 10 paintings on its walls. Is the mean smaller for houses owned by teachers? The data show the results of a survey of 12 teachers who were asked how many paintings they have in their houses. Assume that the distribution of the population is normal. 11, 8, 7, 3,10, 9, 3,10, 3, 9,9,10 What can be concluded at the a = 0.05 level of significance? a. For this study, we should use ttest for a population mean v V o' b. The null and alternative hypotheses would be: o' o' o' o' c. The test statistic -" = C] (please show your answer to 3 decimal places.) 0' d. The p-value = C] (Please show your answer to 4 decimal places.}