A data set includes data from student evaluations of courses. The summary statistics are n=90, x= 3.44, s = 0.58. Use a 0.01 significance level to test the claim that the population of student course evaluations.has a mean equal to 3.50. Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the originalclaim.vital and the full and alemave mypoteses!O A. Ho: μ#3.50H₁: μ = 3.50O C. Ho: μ = 3.50H₁: μ<3.50Determine the test statistic.(Round to two decimal places as needed.)Determine the P-value.(Round to three decimal places as needed.)State the final conclusion that addresses the original claim.Ho. There isCOB. Ho: μ = 3.50H₁: μ#3.50O D. Ho: μ = 3.50H₁: μ>3.50evidence to conclude that the mean of the population of student course evaluations is equal to 3.50correct.

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Answered: A data set includes data from student…

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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You are given the null and alternative hypotheses and the sample information shown below. Complete parts a and b below. Sample 1 n1 = 120 S, = 34 X = 130 Sample 2 n2 = 135 HA: H1- H2#0 S2 = 36 X2 = 150 a. Develop the appropriate decision rule, assuming a significance level of 0.01 is to be used. Select the correct choice below and fill in the answer box(es) to complete your choice. (Round to two decimal places as needed.) O A. Reject Họ if t O B. Reject Họ if t> O C. Reject H, if t< b. Test the null hypothesis and indicate whether the sample information leads you to reject or fail to reject the null hypothesis. Use the test statistic approach. Calculate the value of the test statistic. t= (Round to two decimal places as needed.) Since the test statistic V in the rejection region, the null hypothesis. There is V evidence at a = 0.01 to conclude that the two population means are different.
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Use a t-test to test the claim about the population mean at the given level of significance using the given sample statistics. Assume the population is normally distributed. Claim: #253; a%30.05 Sample statistics: x-23.1, s=4.5, n=12 What are the null and alternative hypotheses? Choose the correct answer below. What is the value of the standardized test statistic? The standardized test statistic is (Round to two decimal places as needed.)
A teacher would like to determine if quiz scores improve after completion of a worksheet. The students take a pre-quiz before the worksheet and then another quiz after the worksheet. Assume quiz scores are normally distributed. The grades for each quiz are given below. Use a significance level of α = 0.05. Paired Two-Sample Means, Group 1 is the pre-quiz and group 2 is the post-quiz: Pre-Quiz Scores < Post-Quiz Scores. Ho Hd=0 : H₁: Hd <0 pre-quiz post-quiz 11 12 8 10 11 4 11 12 6 13 8 11 10 8 6 8 9 11 7 18 16 16 12 15 11 12 12 12 12 17 11 16 14 12 9 10 12 11 11 19 What is the test statistic? test statistic = (Report answer accurate to 4 decimal places.) What is the p-value for this sample? p-value (Report answer accurate to 4 decimal places.)
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A kilo restaurant implemented a change in the composition and presentation of its dishes. We want to assess whether the average weight of meals served is greater after the changes, compared to the previous average, which was 640. For this purpose, the weights of dishes from a random sample of 10 customers were taken. The average weight of dishes in the sample was 656 and the variance 144. Use a statistical test for the evaluation. Adopt a significance level of 10%. a. What is the value of the test statistic? b. What range of values is the p-value in? c. At the 10% significance level, can you reject the null hypothesis?
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Answer all these questions correctly thanks.
Test the claim about the population mean, µ, at the given level of significance using the given sample statistics. Claim: u#6000; a = 0.05; o = 331. Sample statistics: x = 6200, n = 47 Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: H#6000 B. Ho: µs 6000 Hai H2 6000 Ha: H# 6000 O C. Ho: H26000 O D. Ho: H = 6000 %3D Ha: H6000 Ha: u +6000 O E. Ho: H#6000 O F. Ho: µ#6000 Ha:H= 6000 Ha: H5 6000
A kilo restaurant implemented a change in the composition and presentation of its dishes. We want to assess whether the average weight of meals served is greater after the changes, compared to the previous average, which was 640. For this purpose, the weights of dishes from a random sample of 10 customers were taken. The average weight of dishes in the sample was 656 and the variance 144. Use a statistical test for the evaluation. Adopt a significance level of 10%. a. What is the distribution of the test statistic? b. What kind of alternative hypothesis? c. What is the test's critical value (the value that defines the critical region), on the scale of the test statistic? (If the test is bilateral, enter only one of the values.)

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