Question 26What statistical test should be used if the parameters of a distribution, specifically its mean and standarddeviations are known?O z-testO Chi-SquareANOVAO t-test

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Answered: What statistical test should be used if…

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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cdeby learn write tutor study resourc Homework help starts here! Math Probability » Q&A Library » For a 4-unit class like Statistics, students should spend average of 12 hours studying for the Question For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. A survey was done on 24 students, and the distribution of total study hours per week is bell-shaped with a mean of 13 hours and å standard deviation of 2.6 hours. Use the Empirical Rule to answer the following questions. a) 68% of the students spend between hours and hours on Statistics each week. b) 95% of the students spend between hours and hours on Statistics ea h week. c) 99.7% of the students spend between hours and hours on Statistics each week. O Type here to search hp 144
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Determine your test statistic: either use a z-test or t-test• There are three key questions to ask: Is the variance of the population known? Is the distribution of the population normal (or approx. normal)? Is the sample size large?1. When the variance is known and either the distribution is normal or sample size is large,use a z-test statistic2. When the variance is unknown and a sample size less than 30, use a t-test statistic aslong as the population is normal (or approx. normal)?

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What statistical test should be used if the parameters of a distribution, specifically its mean and deviations are known? O z-test O Chi-Square O ANOVA Ot-test