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?Ho:O = 4H:What type of test is being conducted in this problem?Two-tailed testLeft-tailed testO Right-tailed testWhat parameter is being tested?Population proportionPopulation standard deviationPopulation meanO Time Remaining: 01:50:59NextDECtvMacBook ProSearch or type URL

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Answered: The null and alternative hypotheses are…

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 claim below about the mean of the differences for a population of paired data at the level of significance a. Assume the samples are random and dependent, and the populations are normally distributed. Claim: H4 = 0; a =0.05. Sample statistics: d = 3.2, s, =8.49, n=9 Identify the null and alternative hypotheses. Choose the corect answer below. O A. Ho: Has0 O B. Ho: Ha *0 Ha Ha >0 OC. Ho: Ha 0 Hi Hg 20 OE. Ho: Ha 20 F. Hoi Ho =0 The test statistic is t= 1.13. (Round to two decimal places as needed.) The critical value(s) is(are) to = (Round to two decimal places as needed. Use a comma to separate answers as needed.)
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Researchers divide college students up into three groups and expose each group to a different teaching style. The students then take an exam. Does the mean score differ for the three teaching styles? Decide what statistical procedure would most likely be used to answer the research question. Assume all assumptions have been met for using the procedure. O Confidence interval Chi-Squared test O ANOVA Paired Samples t test O Two independent samples t test O Regression O One sample t test
Instructor-created question Question Help Male BMI Female BMI Given in the table are the BMI statistics for random samples of men and women. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Use a 0.01 significance level for both parts to test the claim that males and females have the same mean boly mass index (BMI) as follows. H2 40 40 28.3598 26.2407 7.478317 4.243401 prrect: 0 What are the null and alternative hypotheses? OB. Ho: H1- H2 O A. Ho: H1H2 H1: H1 H2 O C. Ho: H12H2 O D. Ho: H1= #2 H1: H1##2 H1: H1<#2 Look in row n-1 and two-tail column alpha of the t-table and change the sign to get the lower critical value: (Round to three decimal places as needed.) Look in row n-1 and two-tail column alpha of the t-table to get the upper critical value: (Round to three decimal places as needed.) Click to select your answer(s) and then click Check Answer.…
Test the claim that the proportion of people who own cats is significantly different than 50% at the 0.02 significance level. Based on a sample of 100 people, 48% owned catsThe test statistic is: (to 2 decimals)The p-value is: (to 2 decimals)Based on this we: Reject the null hypothesis Fail to reject the null hypothesis
use pic to answer, test is anova one way test 1. Did researchers use the correct test? a. yes b. no 2. Justify your answer, above. a. ANOVa can be used when you have three or more levels of an independent variable b. regression analysis would be prefereable because the independent variable is contiuous c. anovas primary strength is its ability to examine for difference in two groups d. you can use anove wiht three levels, but a t-test would be easier and give you the same results 3. How would you interpret the results of this oneway ANOVA? a. there is likely a difference in happiness in the "population" b. there is no mean differences in happiness across the three conditions c. there are mean differences but we do now know which conditions differ d. those who spend time reminiscing are signficantly more likely to be happy than those who dont
test the claim that the mean GPA of night students is significantly different than 3.4 at the 0.1 significance level. the null and alternative hypothesis would be: The test is:? Based on the sample of 20 people, the sample mean GPA was 3.35 with a standard deviation of 0.04. The test statistic is: ? (to 2 decimals) The P-value is: ? (To 2 decimals) Based on this we: Fail to reject the null hypothesis or we reject the null hypothesis
A sample mean, sample size, and population standard deviation are provided below. Use the one-mean z-test to perform the required hypothesis test at the 5% significance level. x=33, n=11, σ=5, H0: μ=30, Ha: μ>30 The test statistic is z=_____________ (Round to two decimal places as needed.) The P-value is ___________. (Round to four decimal places as needed.) ____________ (Do not reject, Reject) the null hypothesis. The data _____________ (do not provide, provide) sufficient evidence to conclude that the mean is __________________ (equal to 30, greater than 30, less than 30. not equal to 30.)
You'd like to test if marijuana use (no use, use) is associated with depression scores (O to 40) in a matched case-control based sample. One Sample Z test One Sample t test Two Sample Z test O Independent two Sample t test O Paired t test One-way ANOVA Chi Square test Pearson's Correlation Coefficient Simple Linear Regression
Identify the null and the alternative hypothesis for this test choose the correct answer below The test statistic for the hypothesis test is Identify the P value for the hypothesis test

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