Compute the observed significance of each test.a. Testing Hoμ = 54.7 vs Ha : µ< 54.7, test statistic z = -1.72b. Testing Ho: μ = 195 vs H₁ : μ ‡ 195, test statistic z = -2.07c. Testing H₂ μ = −45 vs H₁ : µ> −45, test statistic z = 2.54

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Answered: Compute the observed significance of…

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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Given a sample with r= 0.823, n= 10, and a= 0.05, determine the standardized test statistic t necessary to test the claim p= 0. Round answers to three decimal places. %3D О А. 3.816 В. 2.891 С. 4.098 D. 1.782
One group of accounting students took a distance learning class, while another group took the same course in a traditional classroom. At α = .10, is there a significant difference in the mean scores listed below? Exam Scores for Accounting Students Statistic Distance Classroom Mean scores x⎯⎯1x¯1 = 9.0 x⎯⎯2x¯2 = 10.2 Sample std. dev. s1 = 2.1 s2 = 2.4 Number of students n1 = 19 n2 = 19 Assume μ1 is the mean score of distance learning and μ2 is the mean score of classroom learning. The appropriate hypotheses is H0: μ1 – μ2 = 0 vs. H1: μ1 – μ2 ≠ 0 (b) Specify the decision rule. (Round your answers to 3 decimal places. A negative value should be indicated by a minus sign.) Reject the null hypothesis if tcalc < _______. Or tcalc > ______________. (c) Find the test statistic tcalc. (Round your answer to 4 decimal places. A negative value should be indicated by a minus sign.) tcalc ______________
Please answer a-d. Thanks!
or and Bias G Which of the following scenarios X + /assignments/25185102 nments > CH 1.2 Sampling Error and Bias Sampling Error and Bias Identify sampling errors and bias Question Which of the following scenarios contain biased samples? Select all that apply. Select all that apply: To estimate which presidential candidate is likely to win the vote of a town, Mark collects data by interviewing people leaving a local Christian church. Kenneth wants to estimate the mean height of students at his school. He collects data by selecting a random group of students within his classroom. To estimate the male to female ratio of the residents of her city, Janice collects data by recording the sex of every 50th resident after selecting a random starting point on a list of residents. Amy wants to estimate the mean grade point average of students at her school. She collects data by recording the grade point average of every 25th student on the list of students after a randomly selected first student.…
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Compute the observed significance of each test. a. Testing Hoμ = 54.7 vs H₁ b. Testing Hoμ = 195 vs H₁ c. Testing Hoμ = −45 vs H₁ μ< 54.7, test statistic z = -1.72 μ‡ 195, test statistic z = -2.07 μ> -45, test statistic z = 2.54