### Hypothesis Testing: Example ScenarioYou wish to test the following claim ($H_a$) at a significance level of $\alpha = 0.001$.\[H_0: \mu = 88.1 \\H_a: \mu \neq 88.1\]#### Sample Information- Population is assumed to be normally distributed.- Sample size ($n$) = 19- Sample mean ($M$) = 80.2- Sample standard deviation ($SD$) = 18.2### Questions1. **What is the critical value for this test?** - Report your answer accurate to three decimal places. - **Critical Value = ± [ ___ ]**2. **What is the test statistic for this sample?** - Report your answer accurate to three decimal places. - **Test Statistic = [ ___ ]**3. **The test statistic is...** - ( ) in the critical region - ( ) not in the critical region4. **This test statistic leads to a decision to...** - ( ) reject the null - ( ) accept the null - ( ) fail to reject the null### InstructionsPlease calculate the critical value and the test statistic using the given sample data. Use these values to determine whether the test statistic falls within the critical region. Make a decision based on the statistical evidence regarding the null hypothesis.

Answered: You wish to test the following claim…

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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use the date form the second picture to answer question 3 please help me with question 3
What value of z-alpha/2 is used in a 90% confidence interval for the population mean?
If a n=30 random sample from a normal population with variance σ^2=2084.49 and a sample mean of 188.1 is taken. construct a 60% confidence interval for the population mean µ construct a 99% confidence interval for the population mean µ what is the best point estimate of the population mean what is the best point estimate of the population variance
Using the data set provided in this lesson, the scores from the variable 'Life satisfaction' were found to be skewed at several time points, and given the relatively small sample size, you decide to run a non-parametric test to determine if there was a difference in median life satisfaction score at baseline (variable code = Life satisfaction_base), six months (variable code = Life satisfaction_6months) and one year (variable code = Life satisfaction_1 year). What statistical test would you use? a. Mann Whitney b. Wilcoxon Signed Rank C. Kruskal Wallis d. Friedman's test
FULL SCREEN PRINTER VERSION « BACK Chapter 08, Section 8.2, Problem 019 A city planner wants to estimate the average monthly residential water usage in the city. He selected a random sample of 35 households from the city, which gave the mean water usage to be 3409.40 gallons over a one-month period. Based on earlier data, the population standard deviation of the monthly residential water usage in this city is 387.30 gallons. Make a 97% confidence interval for the average monthly residential water usage for all households in this city. Round your answers to two decimal places. to gallons SAVE FOR LATER SUBMIT ANSWER Question Attempts: 0 of 2 used powered by MapleNet on ion 5a tion 5b ction 19 ection 022 Version 4.24.20.1 ent I Privacy Policy I O 2000-2020 John Wiley & Sons, Inc. All Rights Reserved. A Division of John Wiley & Sons. Inc. MacBook Air DII DD F11 F12 888 000 F10 80 F8 F9 F7 F6 F5 F3 F4 F1 F2 & 23 2$ delets %3D 7 8 2 3
Question 2 > Test the claim that the mean GPA of night students is larger than the mean GPA of day students at the .01 significance level. The null and alternative hypothesis would be: Ho: UN PD Ho:PN H1: UN > HD H1:PN + PD Hị :PN PD H1:HN < µD H1: HN + HD = µD Ho:pN PD Ho:PN PD Ho:µN UD Ho:UN HD The test is: two-tailed right-tailed left-tailed The sample consisted of 70 night students, with a sample mean GPA of 2.45 and a standard deviation of 0.07, and 60 day students, with a sample mean GPA of 2.41 and a standard deviation of 0.06. The test statistic is: (to 2 decimals) The critical value is: 2.3912 (put this answer in the below to 2 decimals) The critical value is: (to 2 decimals) Based on this we: Reject the null hypothesis O Fail to reject the null hypothesis
The mean weight of super model winners is less than 108 pounds. A study of 25 randomly selected super model resulted in a mean winner weight of 115 pounds. Choose the correct Null and Alternative Hypothesis For help please click the link below! Ho: H108 Ha: H=108 Ho:H=108 Ha: u> 108 Ho : u=108 Ha: H<108
What critical value should be used to estimate the difference in two population proportions with 60% confidence interval from two samples of size 14?
What distribution must be used to calculate confidence interval and hypothesis test if the standard deviation of the population is unknown?
Question 6 > Test the claim that the mean GPA of night students is significantly different than 2.8 at the 0.01 significance level. The null and alternative hypothesis would be: Ho:p > 0.7 Ho:p 2.8 Họ:µ = 2.8 Họ:p = 0.7 H1:p 0.7 H1: µ > 2.8 H1:µ < 2.8 H1:µ# 2.8 H1:p# 0.7 The test is: left-tailed two-tailed right-tailed Based on a sample of 65 people, the sample mean GPA was 2.81 with a standard deviation of 0.03 The test statistic is: (to 2 decimals) tv 5.
If the 95% confidence interval for a population mean from a certain sample is (-6.3, 4.5), then (a) the sample is mean (b) the margin of error is
Are these assumptions necessary to use the chi-square procedure for calculating confidence intervals and hypothesis testing? The variables are random non-negative numbers The distribution is right-skewed Their only parameter is the degrees of freedom the mean (mu) and the variance (sigma^2) of the chi-squared random variable are mean (mu) = the degrees of freedom and the variance (sigma^2) =2degrees of freedom

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