An industrial plant wants to determine which of two types of fuel, electric or gas, is more cost efficient (measured in cost per unit of energy). Independentrandom samples were taken of plants using electricity and plants using gas. These samples consisted of 7 plants using electricity, which had a mean cost perunit of $36.41 and standard deviation of $8.53, and 13 plants using gas, which had a mean of $46.50 and standard deviation of $8.60.Assume that the populations of costs per unit are normally distributed for each type of fuel, and assume that the variances of these populations are equal.Can we conclude, at the 0.10 level of significance, that u, the mean cost per unit for plants using electricity, differs from H,, the mean cost per unit for plantsusing gas?Perform a two-tailed test. Then complete the parts below.Carry your intermediate computations to three or more decimal places and round your answers as specified in the table. (If necessary, consult a list offormulas.)(a) State the null hypothesis H and the alternative hypothesis H,.Ho :0H, :0(b) Determine the type of test statistic to use.(Choose one)D=0OSOO20(c) Find the value of the test statistic. (Round to three or more decimal places.)O An industrial plant wants to determine which of two types of fuel, electric or gas, is more cost efficient (measured in cost per unit of energy). Independentrandom samples were taken of plants using electricity and plants using gas. These samples consisted of 7 plants using electricity, which had a mean cost perunit of $36.41 and standard deviation of $8.53, and 13 plants using gas, which had a mean of $46.50 and standard deviation of $8.60.Assume that the populations of costs per unit are normally distributed for each type of fuel, and assume that the variances of these populations are equal.Can we conclude, at the 0.10 level of significance, that u, the mean cost per unit for plants using electricity, differs from H,, the mean cost per unit for plantsusing gas?Perform a two-tailed test. Then complete the parts below.Carry your intermediate computations to three or more decimal places and round your answers as specified in the table. (If necessary, consult a list offormulas.)(a) State the null hypothesis H, and the alternative hypothesis H,.Ho :0H, :0(b) Determine the type of test statistic to use.(Choose one) vD=0OSO(c) Fe test statistic. (Round to three or more decimal places.)ロロChi-Square(d) Find the two critical values at the 0.10 level of significance. (Round to three or more decimal places.)I and O(e) Can we conclude that the mean cost per unit for plants using electricity differs from the mean costper unit for plants using gas?O Yes ONoolo

Use the Two sample independent t test Sample Mean 36.41 Standard Deviation (S1)…

Answered: Perform a two-tailed test. Then…

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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Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. H0: p=0.72 versus H1: p≠0.72 n=500, x=350, a=0.01
Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. Ho: p = 0.2 versus H,: p> 0.2 n= 125; x= 40; a = 0.05 Click here to view page 1 of the table. Click here to view page 2 of the table. Calculate the test statistic, zg. Zo = (Round to two decimal places as needed.)
Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. H0: p=0.9 versus H1: p>0.9 n=200; x=190; α= 0.05 Calculate the test statistic, z0.
F2 Identify the type I error and the type II error that corresponds to the given hypothesis. The proportion of people who write with their left hand is equal to 0.24. Ex Which of the following is a type I error? Get more help. OA. Reject the claim that the proportion of people who write with their left hand is 0.24 when the proportion is actually 0.24. OB. Fail to reject the claim that the proportion of people who write with their left hand is 0.24 when the proportion is actually different from 0.24. OC. Reject the claim that the proportion of people who write with their left hand is 0.24 when the proportion is actually different from 0.24. OD. Fail to reject the claim that the proportion of people who write with their left hand is 0.24 when the proportion is actually 0.24. #3 80 F3 E D C $ 4 a F4 R F % 5 V g F5 T G ^ 6 MacBook Air B c F6 Y & 7 H F7 U N * 00 8 J DII F8 ( 9 M K F9 ) 0 O V a F10 Clear all P
Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. H0: p=0.81 versus H1: p≠0.81 n=500, x=390, a=0.01 find p value
Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. Ho:p = 0.5 versus H,: p>0.5 n= 200; x = 120, a = 0.05 Use technology to find the P-value. P-value = (Round to three decimal places as needed.)
Only answer 4 and 5, thank you Use the SPSS information on the following pages to complete your analysis and paper. Respond to the following in your paper. 1. The two variables for this study are age and consumer sense of entitlement. Which one is the independent variable? Which one is the dependent variable? 2. What are the null hypothesis and the alternate hypothesis for this study? 3. What is the R2 for this study? What does the R2 value mean? Be specific to this study in your explanation of the meaning of the R2 value. 4. What is the regression equation for this study? 5. What is the finding for this study, using a significance level of p < .10? What implications does this finding have on marketing? SPSS Regression Variables Entered/Removeda Model Variables Entered Variables Removed Method 1 Ageb . Enter a. Dependent Variable: Entitlement b. All requested variables entered. Model Summary Model R R Square Adjusted R…
Types of Error: E In a certain population, the mean mu is 45. There are one thousand statisticians, and none of them know what mu is. Each statistician takes a simple random sample from this population, and each one uses his/her sample to perform the following two-sided test: H0: mu = 42 Ha: mu != 42 The plan is to reject the Null Hypothesis if the P-value is less than 0.05. How many of the statisticians will commit a Type-I error? Group of answer choices ( ) About half of them ( ) None of them. ( ) All of them. ( ) About 50 of them ( ) About 100 of them.
Scenario: 200 people were asked, “Who is your favorite superhero?” Below are the data. Test the null hypothesis that the population frequencies for each category are equal. α= .05. Iron Man Black Panther Wonder Woman Spiderman fo = 40 fo = 60 fo =55 fo = 45 fe = fe = fe = fe = What is the correct result based on the data?
Can you help me with these please?
D iew an example Get more help. V Use technology to find the P-value for the hypothesis test described below. The claim is that for a smartphone carrier's data speeds at airports, the mean is μ = 17.00 Mbps. The sample size is n = 16 and the test statistic is t= -2.084. P-value= (Round to three decimal places as needed.) X # 3 E 80 I D C $ 4 ƠN F4 R F V 07 20 % 5 J T G 6 B MacBook Air F6 Y H & 7 F7 U N * 00 8 J DII F8 - M ( 9 K F9 O ) < I H O L 72 Clear all P. V ▾ F11 { سال = [ command option
The null and alternative hypotheses are given. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. What parameter is being tested? H0: σ = 3 H1: σ ≠ What type of test is being conducted in this problem? Two-tailed test Left-tailed test Right-tailed test

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