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- You are required to test at the 5% level of significance the hypothesis that the average monthly earnings on Hyundai Vehicles is equal to $110,000 versus the alternative that it is different from $110,000. Complete the following: i. Give the null and alternative hypothesis of thos test. ii. Determine the critical value(s) of this test. iii. Compute the value of the test statistic.When a researcher rejects the null hypothesis The obtained statistical value is larger than the critical value. The obtained statistical value is smaller than the critical value P-value is smaller than the significant level.When conducting a one-sample z-test, a one-tailed test will have _____ compared to a two-tailed test. Group of answer choices more critical values a critical value that is closer to zero the same critical value a critical value that is further from zero
- how to find the critical value for the two-tailed test with a=0.10. Thanks for the help!State the null hypothesis if traffic department wants to test whether the modification reduces the number of traffic accidents in Central. Continue from part a, state the corresponding alternative hypothesis of the test. Continue from part a, calculate the test statistics of the test. Continue from part c, what is the critical value of the test if the significant level is 1%? According to the test, is it reasonable to conclude that the modification reduced the number of traffic accidents?A manufacturer of cabin bags advertises that on average, the mean weight of their bags is 2kg. The quality control division of the company do regular testing to ensure the weights on average are not more than 2kg. i. Write down the null and alternative hypotheses to test this claim. ii. Explain what it would mean to make a Type II error in this situation. iii. Explain the possible consequences of a Type II error when the test was conducted by the quality control division of the company. iv. Explain the possible consequences of a Type II error if the test was conducted by a consumer advocacy group external to the company.
- Answer the following to summarize the test of the hypothesis that there is no dependence between the two variables color vision of participant and trial outcome. For your test, use the 0.05 level of significance. a. Find the value of the test statistic. (Round to two or more decimal places.) b. Find the critical value for a test at the 0.05 level of significance. (Round to two or more decimal places.) c. Can we reject the hypothesis that there is no dependence between the variables color vision of participant and trial outcome? Use the 0.05 level of significance.Hauz of Gaz claims that more than two-thirds of the houses in a certain subdivision use their brand. Is there a reason to doubt this claim if 25 out of a random sample of 40 houses in the subdivision use the company's brand? Test the claim at 0.01 level of significance. What is the value of the test statistic? (a) 0.6053 (b) 0.6503 (c) -0.6053 (d) -0.6503 Based on the result on the comparison between critical and computed value, what can be concluded? (a) There is enough evidence to reject the claim that more than two-thirds of the houses in the subdivision use Hauz of Gaz brand (b) There is not enough evidence to reject the claim that more than two-thirds of the houses in the subdivision use Hauz of Gaz brand (c) Accept the null hypothesis (d) The given information is not enough to make any conclusionDr. Mackintosh believes a new olfactory therapy would be more successful in promoting weight loss among obese patients. His patients are first weighed and then randomly assigned to olfactory therapy, dance therapy, or a control condition. At the end of the three weeks, the amount of weight lost is recorded. The results indicate no significant difference in the amount of weight lost between the three conditions. If true differences existed between the conditions, but they were not detected, what kind of error occurred?
- The test statistic of Z equals -3.19Is obtained when. Testing the claim that P is less than .75. Use a significance level of a equals .05 to find the critical values Should we reject HO or fail to reject HOA recent survey showed that from a sample of 500 packages delivered by a Postal Service, 480 were delivered on time. b). The manager of the postal services claims that 98 percent of their mail are delivered on time. He wants to test at the 1% significance level to determine whether the true proportion is less than 98 percent. (i). give the null and alternative hypothesis of this test. (ii). determine the critical value(s) of this test (iii). compute the value of the test statisticsAn inventor, working at a science tech lab, believes innovations in satellites are increasing. The inventor would like to test the claim that the average number of new ideas for satellite development per month at the science tech lab is over 60 new ideas. Using the computed test statistic of 1.05 and the critical value of 1.28, is there enough evidence for the inventor to reject the null hypothesis? Use the graph below to interpret the critical value. First select the appropriate test type (left-, right-, or two- tailed), then plot the points along the x-axis (for the critical value and test statistic), and use them to choose the appropriate interpretation.