If the computed value is greater than the critical value, then we ______________. a. retain the null hypothesis b. reject the null hypothesis c. support the null hypothesis d. fail to reject the null hypothesis
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If the computed value is greater than the critical value, then we ______________.
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- When is a researcher at risk of making a Type II error? Group of answer choices: whenever H0 is rejected whenever H1 is rejected whenever H0 fails to be rejected The risk of a Type II error is independent of the decision from a hypothesis test.If the null hypothesis is h = h0 (here h denotes the population parameter of interest.) and the alternate hypothesis is h > h0 then we perform a two-tail hypothesis testing. True or FalseTo establish the alternative hypothesis, a theory that directly contradicts the research hypothesis is called. a.Statistical hypothesis b.Null hypothesis c.Alternative hypothesis d.None of these
- If the t-computed value is 2.115 and the critical value is 2.423, what will be the decision? a. Reject the null hypothesis. b. Do not reject the null hypothesis. c. Reject both the null and alternative hypotheses. d. Support both the null and alternative hypotheses.The Null hypothesis, denoted by H0,represents the hypothesis that will be accepted only if the data provide convincing evidence of its truth.truefalseA _____ critical region makes it _____ to reject the null hypothesis. Question 10 options: larger; harder larger; easier smaller; moderately difficult smaller; easier
- When is a researcher at risk of making a Type II error? a. whenever H1 is rejected b. whenever H0 fails to be rejected c. whenever H0 is rejected d. The risk of a Type II error is independent of the decision from a hypothesis test.Determine which of the following statements are true about the critical region. The critical region is a term used when the null hypothesis is rejected. The critical region is comprised of extreme sample values that are very unlikely to be obtained if the alternative hypothesis is true. The critical regions is determined by the alpha level. The critical region is comprised of extreme samples values that are very unlikely to be obtained if the null hypothesis is trueA researcher hypothesizes that Drug A is more effective than Drug B. In conducting an analysis to test this hypothesis, how should the null hypothesis be stated? a. H0: μDrug A = μDrug B b. H0: μDrug A > μDrug B c. H0: μDrug A ≠ μDrug B d. H0: μDrug A < μDrug B
- State whether each hypothesis is null or alternative. 1. Students using i brand A ballpens write better than those using brand B balipens. 2. There is no s gnificant difference between the average consumption of gasoline in carA and the average consurption of gasoline in car B. 3. The proportion of senior high school graduates in a certain school is 10% of the entire population. 4. The average iricome of families per month in a certain town is 38,000 pesos. 5. The proportion of husbands using motorcycles in region 2 is more than 50%. 6. The proportion of patients with lung cancer is higher among smokers than among nonsmokers. 7. The proportion of senior high school students who enrolled in HUMSS strand is not equal to 80%. 8. An airline claims that less than 12% of its entire lost luggage is never found. 9. The proportion of COVID 19 patients who have asymptomatic cases is less than 25%. 10. The propcrtion of students who will use distance learning in the entire population is more than…Which of the following is an example of a null hypothesis? a. The thickness of aluminum sheets averages is not .03 inches, as required. b. The average quantity of detergent put into a box by this filling machine is not 1 pound and this shipping company's average delivery time is different from 3 days. c. This industrial process makes windshields with an average length of 33 inches. d. This shipping company's average delivery time is different from 3 days. e. The average quantity of detergent put into a box by this filling machine is not 1 pound.The manufacturer of a certain engine treatment claims that if you add their product to your engine, it will be protected from excessive wear. An infomercial claims that a woman drove 3 hours without oil, thanks to the engine treatment. A magazine tested engines in which they added the treatment to the motor oil, ran the engines, drained the oil, and then determined the time until the engines seized. Complete parts (a) and (b) below. (a) Determine the null and alternative hypotheses that the magazine will test. UpperH0: ▼ muμ sigmaσ pp ▼ not equals≠ less than< greater than> equals= 3 Upper H1: ▼ muμ sigmaσ pp ▼ not equals≠ equals= less than< greater than> 3 (b) Both engines took exactly 17 minutes to seize. What conclusion might the magazine make based on this evidence? A. The infomercial's claim is true. The Informericial not true