Determine the test statistic for the hypothesis test.2.44553.82312.39471.8961Determine the appropriate conclusion for this hypothesis test.The sample data do not provide sufficient evidence to reject the null hypothesis that the averagemonthly electricity bill from this utility company is $107.96 and thus we conclude that averagemonthly electricity bill from this utility company is likely about $107.96.The sample data do not provide sufficient evidence to reject the alternative hypothesis that theaverage monthly electricity bill from this utility company is greater than $107.96 and thus weconclude that the average monthly electricity bill from this utility company is likely greater than$107.96.The sample data provide sufficient evidence to reject the alternative hypothesis that the averagemonthly electricity bill from this utility company is greater than $107.96 and thus we conclude thatthe average monthly electricity bill from this utility company is likely about $107.96, as claimed.O The sample data provide sufficient evidence to reject the null hypothesis that the average monthlyelectricity bill from this utility company is $107.96 and thus we conclude that average monthlyelectricity bill from this utility company is likely greater than $107.96. Question 21A local utility company claims that the monthly electricity bills of its customers are among the lowest inthe state with an average monthly electricity bill of $107.96.An energy analyst believes that the average monthly electricity bill from this utility company is actuallyhigher than $107.96. The analyst collected a random sample of 48 monthly electricity bills from this utilitycompany and found that the average monthly bill of the sample was $115.39, with a standard deviation of$21.50.Use the critical-value method to test the hypothesis that the average monthly electricity bill for customersof this local utility is greater than $107.96, using a significance level of 1%.State the null and alternative hypothesis for this test.© Ho:g= 107.96, Hy:R2 107.96Ho:p> 107.96, H₁: 107.96– Ho:g = 107.96, Hip t 107.96Ο Ho:μ = 107.96, H,:μ < 107.96Determine the critical-value for the hypothesis test.01.29982.408302.01173.5099

Given data : sample size, n =48 sample mean, x̄ = 115.39 sample standard…

Answered: A local utility company claims that the…

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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Among college students, the proportion p who say they're interested in their congressional district's election results has traditionally been 75%. After a series of debates on campuses, a political scientist claims that the proportion of college students who say they're interested in their district's election results is more than 75%. A poll is commissioned, and 217 out of a random sample of 265 college students say they're interested in their district's election results. Is there enough evidence to support the political scientist's claim at the 0.05 level of significance? Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places. (If necessary, consult a list of formulas.) (a) State the null hypothesis H and the alternative hypothesis H₁. H₁ :0 H₁ :0 (b) Determine the type of test statistic to use. (Choose one) ▼ (c) Find the value of the test statistic. (Round to three or more decimal places.) (d) Find the critical…
Among college students, the proportion p who say they’re interested in their congressional district’s election results has traditionally been 65% . After a series of debates on campuses, a political scientist claims that the proportion of college students who say they’re interested in their district’s election results is more than 65% . A poll is commissioned, and 194 out of a random sample of 270 college students say they’re interested in their district’s election results. Is there enough evidence to support the political scientist's claim at the 0.05 level of significance? Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places. (If necessary, consult a list of formulas.) (a) State the null hypothesis H0 and the alternative hypothesis H1 . H0: H1: (b) Determine the type of test statistic to use. ▼(Choose one) (c) Find the value of the test statistic.…
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The averrage gasoline prrice at Chevvron was $3.12 per gallon lastt month. Due to the recent nation-wide gas price drop, the chiief marketing officer of Chevvron believes that there has been a significant reduction in the average gas pricce. In orrder to test hiis belief, he randdomly selected a sample of 36 of Chevvron gas stations and found the average gas price of these stations was $3.06. Assume that the population standard deviation of the population is $0.12, and the significance level (α) is 5%. A. Formmullate the null and the alternative hypotheses: Null: mu ≤ 3.06; Alternative: mu > 3.06 Null: mu = 3.06; Alternative: mu ≠ 3.06 Null: mu ≥ 3.12; Alternative: mu < 3.12 Null: mu = 3.12; Alternative: mu ≠ 3.12 Null: mu ≤ 3.12; Alternative: mu > 3.12 Null: mu ≥ 3.06; Alternative: mu < 3.06 B. Whatt kind of test is this? (Upper-tailed, lower-tailed or two-tailed test) Upper-tailed Two-tailed Lower-tailed C. Findd the test statistic. Is this a z-score or…
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