0 Question 4 v E4 0/5 pts '0 3 8 2 (9 Details An economist claims that 34 % of Americans are optimistic about the U.S. economy. A reporter conducts a hypothesis test at the a = 0.10 significance level to test this claim. In a survey of 650 Americans, the reporter finds that 237 are optimistic about the economy. Find the value of the test statistic for this hypothesis test. Submit Question B 0/5 pts '0 3 8 2 6) Details The management at Leon's Laser Company claims that the mean lifetime of all the lasers the company sells is greater than 7 years. A hypothesis test is conducted at the a = 0.05 significance level to test this claim. In a random sample of 29 lasers, the mean lifetime was found to be 7.17 years, with a sample standard deviation of 1.5 years. The sample data appeared to be normally distributed. What is the critical region for this hypothesis test? O All values of 25 greater than 2.048 O All values of P greater than 0.05 O All values of 75 greater than 0.61 0 All values of z greater than 1.64 0 All values of 75 greater than 1.701 Submit Question Seventy-five students at Wild West College participated in a survey asking how many hours of television they watched each week. The numbers in the survey results had a mean of 16.0 and sample standard deviation 6.8. A hypothesis test is conducted using these results to test the claim that the average WWC student watches fewer than 18 hours of television each week. Find the value of the test statistic for this hypothesis test. Round your answer to three decimal places. Submit Question In a hypothesis test of the claim that a population proportion p is greater than 0.55, the value of the test statistic turns out to be 1.84. Which of the following statements are true? (There may be more than one.) D At the a = 0.10 significance level, we reject the claim. 0 At the a = 0.01 significance level, we reject the claim. 0 At the a = 0.10 significance level, the sample data support the claim. 0 At the a = 0.05 significance level, the sample data support the claim. 0 At the a = 0.05 significance level, the sample data support the null hypothesis. 0 At the a = 0.01 significance level, the sample data support the null hypothesis. Submit Question The weights of CaramelCubes candies are normally distributed with population standard deviation 3 grams. In a sample of 16 CaramelCubes, the mean weight was found to be 43.6 grams. A hypothesis test is conducted at the a = 0.10 significance level to determine whether the mean weight of all CaramelCubes candies is equal to 44 grams. Find the P-value for this hypothesis test. Round your answer to four decimal places. Answer: P-value = C] Submit Question myopenmathcom