DISTANCE EXAM BUSINES XсYouTube MapsRICHFIELDtion 28etereded out ofag questionition 29yeteredged out oflearning.richfield.ac.za/HET/mod/quiz/attempt.php?attempt=2706147&cmid=163798&page=5Business Stats Semester 2 Formu XTranslateSelect one:O a 0.0166O b. 0.9834.O c. 0.0332O d. 0.9668.TheSearch Modules Library ResourcesAppen Projectsn math symbol with line on top - x +XTranscription Test Fi...Select one:Ⓒa. diameter1When testing H: μ-μ ≤0 versus 1 1 2 H: μ-u > 0, the observed value of the Z- score was found to be -2.13.The p-value for this test would beRichfield Graduate I...Bursaries and Graduate Programmeof a confidence interval is a measure of its precision.

Answered: Image /qna-images/answer/f269f4d9-36fa-4a8c-aa0f-d92bbfb7309b.jpg

Answered: When testing H: μ-μ ≤0 versus 1 1 2 H:…

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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I. A statistician randomly sampled 20 observations from a population. The descriptive statistics are given below: n = 20, ¯X=25, s = 4 You are required to estimate the population mean with 95 percent confidence. Please answer the following questions: (Note that t0.025=2.093 and Z0.025=1.96) The point estimate of the population mean (μ) is (type the value here):= Answer. The appropriate confidence interval is Answer because Answer and we Answer. Compute 95 percent confidence interval and type the values of lower confidence limit and upper confidence limit below (round up to two decimal places). Lower Confidence Limit:= Answer, Upper Confidence Limit:= Answer, II. Now the statistician takes a random sample of 20 observations from another population. The descriptive statistics are given below: n = 20, ¯X=25, σ = 4 You are required to estimate the population mean with 95 percent confidence. Please answer the following questions: (Note that t0.025=2.093 and Z0.025=1.96)…
2. The sensitivity (True Positive) and specificity (True Negative) for a diagnostic test (T) are .99 and .95 respectively. The prevalence of the disease (D) is .001. Find the predictive value of a positive test result.
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 ______________
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When testing H: μ-μ ≤0 versus 1 1 2 H: µ-u > 0, the observed value of the Z- score was found to be - 2.13. The p-value for this test would be Select one: O a. 0.0166. Ob. 0.9834. O c. 0.0332. O d. 0.9668.