Can you just do number 4 and please show what are the critical values Exercise 1:Step 1. Test Set-upThe average family home in Dry Gulch, Arizona uses 69 gallons of water a day (µ = 69), and the populationstandard deviation is presumed to be 8 gallons per day (a = 8). The town leaders want to reduce waterconsumption. They have instituted a study of new equipment designed to reduce water consumption. Thenew equipment is installed in 100 homes. The research question: Does the new equipment reduce waterconsumption? Test at a 5% significance level. Here are the average daily gallons of water consumed in thetest homes:Assignment04.pdfPage 1 of 5Assignment 4: Chapters 13 & 14Daily Water Use is Gallons69 65 64 66 67 63 69 68 70 6563 65 68 66 66 67 73 71 69 6767 67 68 73 66 66 66 65 69 6063 69 65 66 65 68 68 69 66 7066 63 65 63 67 62 62 69 67 6964 64 66 69 61 69 69 66 68 6771 65 67 63 65 60 67 67 69 6565 66 64 60 68 69| 66 67 65 6666 69 67 64 68 66 63 65 74 6867 65 68 64 69 68 65 67 72 67Question 1: Sample SizeCohen's d effect size is estimated at 0.25, which is a small effect. See the table below:Cohen's d ESThresholdsSmall0.2Medium 0.5| Large|0.8Using the Statistics Kingdom sample size calculator run an a priori statistical power calculation. Will a sampleof 100 be large enough to achieve 80% statistical power. Link: https://woww.statskingdom.com/sample size tzhtml-Will a sample of 100 homes achieve 80% or more statistical power? Place and X in the appropriationbox:Yes NoQuestion 2: What test statistic should you use and why? Place an X in the correct box. Providethe reason for your answer below the checklist.CheckCorrectTestz-test for the population mean, Ht-test for the population mean, A|z-test for the population proportion, ATestAnswer:Question 3: Based on the research question is this a left-tailed, two-tailed, or right-tailed test?Place an X in the correct box. Provide the reason for your answer below the checklist.CheckCorrectTailsTestLeft-tailTwo-tailsRight-tailAnswer:Step 2. Select the Level of Significance, aA 5 percent significance level has been selected. Use the Excel file Finding_CVs_p-values.xlsx to findthe critical value or values. Report the critical value or values here:Question 4: What is (are) the critical values(s)?Answer:

Given : Population standard deviation = 8 Significance level = 0.05

Answered: Exercise 1: Step 1. Test Set-up The…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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Suppose a researcher wants to see if the proportion of college educated adults is higher in New York compared to Florida. The researcher randomly samples 500 adults in New York and found that 196 had a college education, while a random sample of 600 adults in Florida found that 227 had a college education.At the 0.05 level of significance, does the data provide evidence to suggest the proportion of college educated adults is higher in New York than Florida? Step 1: Define the parameter & setup the testStep 2: State the Level of SignificanceStep 3: Find the value of the Test StatisticsStep 4: Find P-Value OR Find Critical ValueStep 5: State Conclusion and why
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QUESTION 4 Agree or disagree with the following statements about using the repeated measures design. 1. The variability of the data tends to increase when using a repeated measures design_________ 2. The cost of study will tend to decrease when using a repeated measures design ___________ 3. The number of participants will tend to increase when using a repeated measures design ____________ 4. The time it takes to run a study will tend to decrease, when running a repeated measures design _____________ QUESTION 5 What does the name repeated measures refer to? a two samples gets data taken from two times b one sample is used three times c one sample gets data taken from two times d one sample gets data taken from one time QUESTION 6 Which of the following hypotheses should NOT be tested using a within design? Think about what is actually possible and would allow us to collect accurate data. a exercise reduces blood…
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A chemical reaction is run 12 times, and the temperature xi (in °C) and the yield yi (in percent of a theoretical maximum) is recorded each time. The following summary statistics are recorded: x⎯⎯=65.0, y⎯⎯=29.03,∑ni=1(xi−x⎯⎯)2=6032.0,∑ni=1(yi−y⎯⎯)2=835.42,∑ni=1(xi−x⎯⎯)(yi−y⎯⎯)=1988.5x¯=65.0, y¯=29.03,∑i=1n(xi−x¯)2=6032.0,∑i=1n(yi−y¯)2=835.42,∑i=1n(xi−x¯)(yi−y¯)=1988.5 Let β0 represent the hypothetical yield at a temperature of 0°C, and let β1 represent the increase in yield caused by an increase in temperature of 1°C. Assume that assumptions 1 through 4 for errors in linear models hold. Find 95% confidence intervals for β0 and β1. Round the answers to three decimal places. The 95% confidence interval for β0 is ( , ). The 95% confidence interval for β1 is ( , ).

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