A student did a poll of a sample of 32 students at Ooltewah and found their amount of pets they owned was normal distributed. He found that the sample mean was 3.4 and the population standard deviation (o-) was 2.1 pets. Find a confidence interval for the population mean for this situation at 90% confidence. You must show your work for full credit.

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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A student did a poll of a sample of 32 students at Ooltewah and found their amount of pets they owned was
normal distributed. He found that the sample mean was 3.4 and the population standard deviation (o-) was 2.1
pets. Find a confidence interval for the population mean for this situation at 90% confidence. You must show
your work for full credit.
Show Your Work
(n)
) =3.4
) = 2.1
cosance led =902
2.4437 <n< 4.3563
The student decided that 90% was not good enough and wants to be more sure. Take the same scenario from
problem 2 but use 99% confidence and find it in the calculator.
novo
、ロ
Transcribed Image Text:A student did a poll of a sample of 32 students at Ooltewah and found their amount of pets they owned was normal distributed. He found that the sample mean was 3.4 and the population standard deviation (o-) was 2.1 pets. Find a confidence interval for the population mean for this situation at 90% confidence. You must show your work for full credit. Show Your Work (n) ) =3.4 ) = 2.1 cosance led =902 2.4437 <n< 4.3563 The student decided that 90% was not good enough and wants to be more sure. Take the same scenario from problem 2 but use 99% confidence and find it in the calculator. novo 、ロ
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