A Moving to another question will save this response.Question 4For testing the difference between two population proportions, the pooled proportion estimate should be used to compute the value of the test statistic when the:populations are normally distributedO sample sizes are smallO samples are independently drawn from the populationsO null hypothesis states that the two population proportions are equalA Moving to another question will save this response.MacBook Proesc%$4@5 0A L

Given problem Given that For testing the difference between two population proportions, the…

Answered: Question 4 For testing the difference…

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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ķs 2 X H A data set includes data from student evaluations of courses. The summary statistics are n=96, x= 3.68, s= 0.65. Use a 0.10 significance level to test the claim that the population of student course evaluations has a mean equal to 3.75. 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 original claim. an example d What are the null and alternative hypotheses? OA. Ho: H=3.75 H, :μ >3.75 OC. Ho: 3.75 H,:μ = 3.75 Determine the test statistic. (Round to two decimal places as needed.) # 3 80 F3 E Get more help. D C LO 6 $ 4 a F4 R F V % 5 I F5 T G A 6 B 1 tv♫ & F6 MacBook Air Y I' |■| √ H & 7 N * F7 U SZA@ J * *00 B. Ho: 4 = 3.75 H₁: 3.75 8 OD. Ho: H=3.75 H₁: <3.75 Vi M DII F8 I 1, (1) K ( 9 8 < I DD F9 O More ) O L command A F10 P : Clear all N option F11 { [ ? + = 11 I Check answer 4) F12 } ] X delete T ret
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Poverty in Alaska vs Hawaii. If we have 26 out of 350 families in Hawaii that were below the poverty time, and if we random select 300 Alaska families, we find 35 families below the poverty line. At the 1% significance level, do the data provide sufficient evidence to conclude a difference in the proportion of families below the poverty line for Alaska and Hawaii? Based on the hypotheses, find the following:Test Statistic = _____________p-value = ______________ Find a 99% confidence interval for the difference in proportion of families below the poverty line in Alaska and Hawaii. ______≤ p1 - p2 ≤ ___________
under what circumstances we should use these statistical methods: Z-Test One sample T-test Dependent T-test Independent 2-sample T-test
Textbook: Statistics for the Behavioral SciencesGregory J. Privitera Please show your work-Concept and Application Problems (Pg.133) If Sample 1 has a variance of 4 and Sample 2 has variance of 32, can we tell which sample had a larger range? If so, which sample had a greater range?
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Drug Trial ProblemClinical trials for a drug was conducted using a treatment group and a placebo group. The results are shown in the table below. Treatment Placebo μ μ₁ μ₂ n 33 38 x̄ 2.31 2.87 s 0.85 0.71 Use a 0.05 significance level to test the claim that the two samples are from populations with different means. State the final conclusion regarding the claim (using p-value). ______________ the HO since the p-value is __________ the significance level α.
Is the racial distribution for students on work study different from the racial distribution for students not on work study? The results of a recent study are shown below. Frequencies of Race for Students On and Not On Work Study White Black Hispanic Asian Other Work Study 77 41 96 50 24 Not Work Study 70 79 86 73 30 α = 0.10 significance level The test-statistic for this data = (Please show your answer to three decimal places.) The p-value for this sample = (Please show your answer to four decimal places.) Thus, the final conclusion is... There is sufficient evidence to conclude that race and work study status are dependent. There is insufficient evidence to conclude that race and work study status are dependent. There is sufficient evidence to conclude that the racial distribution for students on work study is not the same as it is for students not on work study. There is insufficient evidence to conclude that the racial distribution for students on work study…
Inferential statistical analyses that are not based on a set of assumptions of the z test? a. Permissible only when certain assumptions about the sample are met b. nonparametric c. parametric d. innacurate
When testing the difference between two population means under independent sampling, we use the z distribution if _____
You wish to test the following claim (Ha) at a significance level of a problem, d set represents a post-test. (Each row represents the pre and post test scores for an individual. Be careful when you enter your data and specify what your 1 and x2 are so that the differences are computed correctly.) 0.005. For the context of this PostTest - PreTest where the first data set represents a pre-test and the second data H.: Pd = 0 Ha: Hd 7 0 You believe the population of difference scores is normally distributed, but you do not know the standard deviation. You obtain the following sample of data: pre-test post-test 62.1 107.3 36.7 49 43.3 60.1 46.2 25.5 55.7 98.5 46 18 38.1 15.4 49.3 63.8 43 -16.8 45.7 52.8 40.6 64.8 40.3 71.8 48.8 40.6 33.9 84.7 52.1 57.2 40.3 34.9 49.5 56.6 48.5 63 38.8 37.2 35.5 47.2 126.9

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