Example: Female Heights when the population standard deviation is unknownConsider the heights of 15 females in this class. (The results are available on the attached excel spreadsheet.)We will use this sample to give a 95% confidence interval of the population mean for female statistic students,in the US.(a) This is not a simple random sample. How can one go about getting a simple random sample forapproximating the population mean for female statistic students, in the US?(b) Since 15 is less than or equal to 30, we distribution should be “somewhat symmetric(bell-shaped) with onemode and no outliers". Construct a histogram with width = 5, to check on symmetry. Graph the histogrambelow. Do we have a “somewhat" normal distribution?(c) Use Stat Crunch to find the sample mean and sample standard deviation. (Round to 2 decimal places.)(d) Since the population standard deviation is unknown, which test stat are we using, T-stat or Z-stat?(e) Give the degrees of freedom:

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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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Consider the heights of 15 females in this class. (The results are available on the attached excel spreadsheet.) We will use this sample to give a 95% confidence interval of the population mean for female statistic students, in the US.