Identify the standardized test statistic use technology. decide whether to reject or fail the null hypothesis and interpret the decision in the context of Original claim A company claims that the mean monthly residential electricity consumption in a certain region is more than 880kilowatt-hours (kWh). You want to test this claim. You find that a random sample of 69 residential customers has a meanmonthly consumption of 900 kWh. Assume the population standard deviation is 126 kWh. At a= 0.01, can you supportthe claim? Complete parts (a) through (e).A. The rejection regions are z< -2.33 and z>2.33.B. The rejection region is z>2.33.C. The rejection region is z < 2.33.(c) Find the standardized test statistic. Use technology.The standardized test statistic is z =(Round to two decimal places as needed.)BHill

Sample size n =69 Sample mean=900 Population standard deviation =126

Answered: company claims that the mean monthly…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The table below includes results from polygraph (lie detector) experiments conducted by researchers. In each case, it was known if the subjected lied or did not lie, so the table indicates when the polygraph test was correct. Use a 0.05 significance level to test the claim that whether a subject lies is independent of the polygraph test indication. Do the results suggest that polygraphs are effective in distinguishing between truth and lies? E Click the icon to view the table. Determine the null and alternative hypotheses. O A. Ho: Polygraph testing is accurate. H1: Polygraph testing is not accurate. O B. Ho: Whether a subject lies is not independent of the polygraph test indication. H,: Whether a subject lies is independent of the polygraph test indication. O C. Ho: Polygraph testing is not accurate. H1: Polygraph testing is accurate. VD. Ho: Whether a subject lies is independent of the polygraph test indication. H,: Whether a subject lies is not independent of the polygraph test…
What is the relationship between the t-test and the sample size? (i.e., when will a t-test be more likely to be significant/you would reject the null)?
When conducting a hypothesis test (or test of significance), select all the true statement. assume the alternative hypothesis is true. significance level is selected before collecting data. None of these (can be more than one answer) Select the correct answer for the blank of each of the following statements.(i) A smaller significance level makes it (choose one: more difficult, easier) to reject the null hypothesis.(ii) The p-value of a two-tail (or two-side) test is (choose one: twice(double), half of, same as) the p-value of a one-tail (or one-side) test if everything else stays the same.(iii) It is (choose one: possible, impossible) to make both type I error and type II error in one hypothesis test at the same time.(iv) Statistical significance (choose one: implies, does not imply) practical significance.
What does the null hypothesis assume for two independent sample t test?
Q3 Test the given claim. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, and then state the conclusion about the null hypothesis, as well as the final conclusion that addresses the original claim. Among 2125 passengers cars in a particular region, 229 had only rear license plates. Among 326 commercial trucks, 47 had only rear license plates. A reasonable hypothesis is that commercial trucks owners violate laws requiring front license plates at a higher rate than owners of passengers cars. Use a 0.01 significance level to test that hypothesis. A. Identity the nulls and alternative hypotheses B. Identify the test statistic ( round to two decimal places as needed) C. Identify the p- values (round to two decimal places as needed ? State the conclusion about the null hypothesis, as well as the final conclusion that addresses the original claim. A. Fail to reject Ho. There is not sufficient evidence to support the claim that commercial trucks owners…
Find the test statistic Find the critical value What is the conclusion
The table below includes results from polygraph (lie detector) experiments conducted by researchers. In each case, it was known if the subjected lied or did not lie, so the table indicates when the polygraph test was correct. Use a 0.05 significance level to test the claim that whether a subject lies is independent of the polygraph test indication. Do the results suggest that polygraphs are effective in distinguishing between truth and lies? E Click the icon to view the table. Determine the null and alternative hypotheses. O A. Ho: Whether a subject lies is independent of the polygraph test indication. H1: Whether a subject lies is not independent of the polygraph test indication. O B. Ho: Polygraph testing is not accurate. H1: Polygraph testing is accurate. O C. Ho: Polygraph testing is accurate. H1: Polygraph testing is not accurate. O D. Ho: Whether a subject lies is not independent of the polygraph test indication. H1: Whether a subject lies is independent of the polygraph test…
4. Explain the procedure for testing a hypothesis using the P-value approach? What is the criterion for judging whether to reject the null hypothesis?
Identify the claim and state Ho and H Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed, and whether to use a z-test, a t-test, or a chi-square test. Explain your reasoning. Find the critical value(s), identify the rejection region(s), and find the appropriate standardized test statistic. Decide whether to reject or fail to reject the null hypothesis. Interpret the decision in the context of the original claim. A government agency reports that the mean amount of earnings for full-time workers ages 25 to 34 with a master’s degree is less than $70,000. In a random sample of 15 full-time workers ages 25 to 34 with a master’s degree, the mean amount of earnings is $66,231 and the standard deviation is $5945. At α = 0.05, is there enough evidence to support the agency’s claim? Assume the population is normally distributed.
A p-value smaller than the significance level, a means.... We should reject the Null Hypothesis O We should not reject the Null Hypothesis

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company claims that the mean monthly reside oWatt-hours (kWh). You want to test this clain onthly consumption of 900 kWh. Assume the e claim? Complete parts (a) through (e). A. The rejection regions are z< -2.33 and VB. The rejection region is z>2.33. The rainction rosion is 72.33