6. Testing a population mean, Methods (Exercise 9.23 eBook Consider the following hypothesis test: Ho: ?...
Consider the following hypothesis test: Ho: µS 12 Ha: µ > 12 A sample of 25 provided a sample mean 14 and a sample standard deviation s= = 4.32. a. Compute the value of the test statistic (to 2 decimals). 2.31 b. Use the t distribution table (Table 2 in Appendix B) to compute a range for the p-value. The p-value is less than .005 Answer the next three questions using the critical value approach. C. Using a = 0.05,...
{Exercise 9.09 (Algorithmic).} Consider the following hypothesis test: Ho: u 20 Ha: p < 20 A sample of 40 provided a sample mean of 19.6. The population standard deviation is 1.8. a. Compute the value of the test statistic (to 2 decimals). -1.64 b. What is the p-value (to 3 decimals)? -1.757 X c. Using a = .05, can it be concluded that the population mean is less than 20? No d. Using a = .05, what is the critical...
Consider the following hypothesis test: Ho: u = 15 Hai ji #15 A sample of 50 provided a sample mean of 14.15. The population standard deviation is 4. Enter negative value as negative number. a. Compute the value of the test statistic (to 2 decimals). -.03 b. What is the p-value (to 4 decimals)? Use the value of the test statistic rounded to 2 decimal places in your calculations. c. Using a = 0.05, can it be concluded that the...
3-7 Consider the following hypothesis test: Ho: u=15 Ha: u15 A sample of 40 provided a sample mean of 14.16. The population standard deviation is 6. Enter negative value as negative number. a. Compute the value of the test statistic (to 2 decimals) b. What is the p-value (to 4 decimals)? Use the value of the test statistic rounded to 2 decimal places in your calculations. c. Using a 0.05, can it be concluded that the population mean is not...
Consider the following hypothesis test: H 0: = 15 H a: 15 A sample of 40 provided a sample mean of 14.33. The population standard deviation is 7. a. Compute the value of the test statistic (to 2 decimals). (If answer is negative, use minus “-“ sign.) -0.60 b. What is the p-value (to 4 decimals)? -1.2105 c. Using = .05, can it be concluded that the population mean is not equal to 15? Answer the next three questions using...
Consider the following hypothesis test: H 0: 20 H a: < 20 A sample of 60 provided a sample mean of 19.6. The population standard deviation is 1.8. a. Compute the value of the test statistic (to 2 decimals). If your answer is negative, use minus "-" sign. b. What is the p-value (to 3 decimals)? c. Using = .05, can it be concluded that the population mean is less than 20? d. Using = .05, what is the critical...
Consider the follovwing hypothesis test. Ho: us 12 H:u > 12 A sample of 25 provided a sample mean x = 14 and a sample standard deviation s = 4.33. (a) Compute the value of the test statistic. (Round your answer to three decimal places.) (b) Use the t distribution table to compute a range for the p-value. O p-value > 0.200 0.100 < p-value < 0.200 0.050 < p-value < 0.100 0.025 < p-value < 0.050 0.010 < p-value...
Consider the following hypothesis test: H 0: 20 H a: < 20 A sample of 55 provided a sample mean of 19.6. The population standard deviation is 1.6. a. Compute the value of the test statistic (to 2 decimals). If your answer is negative, use minus "-" sign. b. What is the p-value (to 3 decimals)? c. Using = .05, can it be concluded that the population mean is less than 20? d. Using = .05, what is the critical...
Consider the following hypothesis test. a. What is your conclusion if n 1-21, s 1 2-87, n 2 26, and s 2 2 4? Use α-05 and the p-value approach. Calculate the value of the test statistic (to 2 decimals). 2.05 3 The p-value is between .02 and.05 What is your conclusion? Cannot conclude that the two population variances are different b. Repeat the test using the critical value approach. What is the rejection rule for this hypothesis test? Round...
Consider the following hypothesis test. H0: μ ≤ 12 Ha: μ > 12 A sample of 25 provided a sample mean x = 14 and a sample standard deviation s = 4.32. (a) Compute the value of the test statistic. (Round your answer to three decimal places.) _______ (b) Use the t distribution table to compute a range for the p-value. a) p-value > 0.200 b) 0.100 < p-value < 0.200 c) 0.050 < p-value < 0.100 d) 0.025 <...