Problem #1: We would like to determine whether the true mean pH level of a lake differs from 7.4. Lake pH levels are knownto follow a Normal distribution. We select a random sample of water specimens from random locations in thelake. The sample mean pH level is calculated to be 6.5 and the standard deviation is 0.8.Problem #1:A 95% confidence interval for the true mean is found to be (4.6,8.4). What would the appropriate conclusion bebased on this interval?(A) Since 7.4 falls inside the interval, we reject Ho at the 5% level of significance.(B) Since 6.5 falls inside the interval, we reject Ho at the 5% level of significance.(C) Since 6.5 falls inside the interval, we reject Ho at the 2.5% level of significance.(D) Since 7.4 falls inside the interval, we fail reject Ho at the 2.5% level of significance.(E) Since 7.4 falls inside the interval, we reject Ho at the 2.5% level of significance.(F) Since 6.5 falls inside the interval, we fail to reject Ho at the 5% level of significance.(G) Since 7.4 falls inside the interval, we fail to reject Ho at the 5% level of significance.(H) Since 6.5 falls inside the interval, we fail reject Ho at the 2.5% level of significance.Select

Population mean μ=7.4Sample mean x¯=6.5Standard deviation s=0.895% Confidence interval true mean…

Answered: Problem #1: We would like to determine…

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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