Q8:A dairy farmer is interested in knowing true mean December 2019 retail whole milk price ($/liter) forall Canadian cities. 50 cities were randomly selected to survey milk prices, and the average price was$3.8 per gallon. Assume that milk prices are normally distributed, and the population standarddeviation is known to be $0.64 (σ = 0.64). You are to construct a 99% confidence interval for thepopulation mean.a. Construct the interval estimation.b. Determine the number of cities that must be sampled in order to estimate the true mean to within$ 0.22 with 99% confidence.

The sample size is 50, the sample mean is $3.8 per gallon and the population standard deviation is…

Answered: Q8: A dairy farmer is interested in…

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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Milan
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The ages of undergraduate students at two universities (one in the east and one in the west) are being compared. Researchers want to know if there is a difference in the mean age of students at the two universities. The population standard deviations are known. The following data shows the results of samples collected at each institution: School Location n (sample size) sample mean ( ) population standard deviation West 33 25.78 6.29 East 35 23.16 7.52 What is the value of the test statistic for the previous problem? (Enter your answer as a positive value even if you calculated a negative test statistic value i.e. if you calculated -1.311 you should enter 1.311). Round your answer to 3 decimal places.

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