6-The following data are based on random sample taken from two shifts in a certain factory. The variableof interest is the length of time (X) required to perform a certain task.Shift 1>Shift 2n->∙10→>>89.1 →7.6σ1.8->2.11Is there any difference, between shift one and shift two, in the length of time requires to finish a certaintask? Let α = 0.05.

Interpretation:Based on the p-value, we decide to reject the null hypothesis or not.By following…

Answered: 6-The following data are based on…

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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Every year, the students at a school are given a musical aptitude test that rates them from 0 (no musical aptitude) to 5 (high musical aptitude). This year's results were: "Aptitude Score" "Frequency" If 0 1 2 3 4 5 sum 3 6 4 3 2 4 22 0 0 6 The mode aptitude score: 2,5 there is no mode.) 8 8 20 51 ✓o The mean aptitude score: Σ(xf) Σ(5) Please find the median aptitude score by a TI-84: 2.5 2.32 (Round to 2 decimal place.) X x (Please separate your answers by, in bimodal situation. Enter DNE if
5.) (10 pts) The following graphs show survival in the U.S. from 1900 (left-most curve) to 2020 (right-most curve) in 10-year intervals. Estimate the median lifespan in (a) 1900 (b) 1940, and (c) 2020. 100 90 Percent Surviving 70 60 50 40 30 10 882882820° 2020 1900 0 228288 28 28 2 2 Age
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Z.5 points A dependent t-test study and an independent t-test study both produced a t statistic with df = 10. How many individuals participated in each study? 12 for dependent and 12 for independent 12 for the dependent and 11 for independent 11 for dependent and 11 for independent 11 for dependent and 12 for independent
Statistics Question
#1. A random sample is to be selected from a normal population with µ= 120 and o=21. (a) Determine the mean and standard deviation of the sampling distribution of xwhen n = (b) How large would n have to be to for o- to be less than or equal to 2.0? = 49.
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Stoaches are fictional creatures, sometimes mistaken for mome raths. Suppose a two-tailed t-test is conducted to test for a difference between the population means of adult female stoach weights and adult male stoach weights. The female sample has 13 weights, and the male sample has 7 weights. The t-statistic for the test is -0.20542. What is the p-value? (Give your answer to 4 decimal places.) p-value:
A technician suspect that the number of computer errors recorded per day in the LAN follows a Poisson distribution with a mean of 2 errors per day. Record of the number of errors per day for the past 260 days are shown in table below. Number of Number of Pr(X = x) E (0; – e;) Errors per days ei day 77 1 90 2 55 3 30 4 or more a. Test the hypothesis that the number of computer errors per day has the Poisson distribution with mean 2 at the 5% significance level. b. Find an approximate value of the p – value for the test statistics in (a). 8
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