A biologist believes that there has been increase in the mean total suspended solids (TSS, mg/L) amongPhilippine rivers since its last study, where a mean 80 mg/L of TSS was observed. A random sample of 25rivers was observed and the mean TSS was found to be 100 mg/L. Suppose it is of interest to test the biologistclaim, the appropriate pair of null and alternative hypotheses isO Ho: µ-80, Ha: μ>80O Ho: μ-100, Ha: µ>100O Ho: X-bar = 80, Ha: X-bar > 80O Ho: X-bar = 100, Ha: X-bar > 100

given data sample size(n) = 25sample mean x¯ = 100claim: μ>80we have to find null and alternative…

Answered: A biologist believes that there has…

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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a consumer group claims that the mean acceleration time from 0 to 60 miles per hour for a sedan is 6.3 seconds. A random sample of 33 sedans has a mean acceleration time from 0 to 60 miles per hour is 7.2 seconds. Assume that the population standard deviation is 2.5 seconds.At alpha = 0.05, can you reject the claim?
The Office of the University Registrar of Seoul University would like to know if the degree programs in College of Science and Math are equally preferred by students.The test claim that the proportions of the students enrolled are equal in each degree program at alpha=0.05 Using the data on the number of currently enrolled students in each gender (M of F) in each of the four degree programs, fill out the table below and find the: a. Chi-square critical Value b. Chi-square test statistic
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A food inspector, examining 12 jars of a certain brandof peanut butter, obtained the following percentages ofimpurities: 2.3, 1.9, 2.1, 2.8, 2.3, 3.6, 1.4, 1.8, 2.1, 3.2, 2.0, and 1.9. Based on the modification of Theorem 1 of Exer-cise 7, what can she assert with 95% confidence about the maximum error if she uses the mean of this sample as anestimate of the average percentage of impurities in thisbrand of peanut butter?

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