4)nterpret the results of the significance test. Is this result statistically significant? Is this result important from a practical perspective? Directions: Click on the Data button below to display the data. Copy the data into a statistical softwarepackage and click the Data button a second time to hide it. Then perform an analysis of variance (ANOVA)to determine whether or not the differences in weight gain between the treatment groups is statisticallysignificant.DataControlCBTFamily1.10.512.1-1.2-7.311.40.4-3.53.5-1.414.310.8-4.4-1.212.912.9-11.7-4.23.8-13.70.917.410.28.9-7.3-6.2232.46.3-4.313.11.4-2.97.9-7.412.90.47.714.5-5.22.47.620.711.13.8-86.61-1.910.7-3.2-102.3-4.30.7-7.5-21.80.9-0.61.22.610.75.22.116.75.1-11.3-0.316.5-0.9 1. State the null and alternative hypotheses.2. Compute the test statistic. Document how SSTR and SSE were computed. Use 4 decimal places forthe sample means, sample standard deviations and the grand mean and round your answers for SSTRand SSE to 2 decimal places.Edit -InsertFormatsIX,A<>E- E EΣ ΣUse the values for SSTR and SSE to complete the following ANOVA table. Round each of your answersto 2 decimal places.SourceS.S.dfM.S.FTreatmentErrorTotal3. Compute the p-value. Provide the name of the distribution and the parameters used to compute thep-value. Then enter your answer rounded to 4 decimal places.p-value =

The random variable weight gain follows normal distribution. There are 3 independent samples which…

Answered: Directions: Click on the Data button…

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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An airline company is interested in improving customer satisfaction rate from the 50% currently claimed. The company sponsored a survey of 122 customers and found that 72 customers were satisfied. What is the test statistic z? What is the p-value? Does sufficient evidence exist that the customer satisfaction rate is higher than the claim by the company at a significance level of a=0.01?
Data were collected from 400 patients in the US about their estrogen level. Out of the 400, 35 patient have abnormal estrogen levels. On a national level, 8 % of patients have abnormal estrogen level. Researchers want to know the sample proportion differs from the national level. 5% is used for significance. Give the Ho and Ha. The appropriate test. Decision rule. Test calculations. Conclusion with comparison to alpha or critical value. I think this is a two tailed test. Use a one sample t- test. I think the null is rejected. t (40-1) = (400-35) / (.05 divided by sqrt 31) This is where I get stuck.
A z-test is to be performed for a population mean. Express the decision criterion for the hypothesis test in terms of x. That is, determine for what values of x the null hypothesis would be rejected. ala After training intensively for six months, John hopes that his mean time to run 100 meters has decreased from last year's mean time of 11.8 seconds. He performs a hypothesis test to determine whether his mean time has decreased. Preliminary data analyses indicate that it is reasonable to apply a z-test. The hypotheses are Ho:u= 11.8 seconds H:u11.64 O Reject H, if x 11.61 Submit Assignment 2021 McGraw-Hill Education. All Rights Reserved. Terms of Use | Privacy II
The critical value in a hypothesis test Multiple Choice depends on the value of the test statistic. is calculated from the sample data. separates the acceptance and rejection regions. usually is .05 or .01 in most statistical tests.
Researchers were interested in assessing whether stress levels are different at the beginning of the semester compared to finals week. To test this, stress was measured in 5 students at the start of the semester and then again at the end of the semester during finals week. Participant Stress 1 Stress 2 Difference Score (Di) (Di - Mdiff)2 1 22 22 0 2 32 34 -2 3 24 25 -1 4 28 30 -2 5 26 29 -3 What is the observed test statistic (i.e., tobs)? Round to 2 decimal places.
I need help with this problem Conduct a hypothesis test about the mean cost per square foot at a chosen significance level. Reference an internet source for the current average (or median) cost per square foot of homes in Orange County. Discuss/explain your choice of significance level for your hypothesis test in #1 as it relates to the power of a test and Type I/II errors.
A data set includes data from 400 random tornadoes. The display from the technology available below results from using the tornado lengths (miles) to test the claim that the mean tornado length is greater than 2.5 miles. Use a 0.05 significance level. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. What are the test statistic and P-value?
A different I/O psychologist wants to know if there is a difference in worker evaluations depending if the employee is a male or female. A group of managers were recruited and each rated both 15 men and 15 women employee evaluations on a scale of 0-10. The ratings on the worker evaluations were recorded for each manager. Which statistical test would be best to determine if there is a significant difference between groups? one-sample t-test dependent samples t-test ANOVA
An advertising agency is studying social media campaigns and how they impact website traffic. The advertising agency states the average increase in website traffic after a social media campaign is greater than 20 percent. If we would like to test the advertising agency's claim with a hypothesis test using a significance level of a = 0.025 , what is the rejection region? Use the graph below to show the rejection region. First, move the blue dot to choose the appropriate test (left-, right, or two- tailed). Then, slide the shaded region(s) to represent the rejection region. Provide your answer below: Move the blue dot to choose the appropriate test Rejection region= 0.255 -2 Current rejection region = 0.255
What is the primary weakness of sensitivityanalysis? What is its primary usefulness?

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