1.Continuing from the previous problem: Say we collect some data to try and give
ID: 3221857 • Letter: 1
Question
1.Continuing from the previous problem: Say we collect some data to try and give evidence to our claim. We take a random sample of 47 OSU students and ask each student how much he or she spends on coffee each week. We find that our sample mean is $17.38 and the sample standard deviation is $6.79. What is our test statistic for this hypothesis test?
=2.4
2.Continuing from the previous 2 problems: Using your answers from the last two problems, what is the p-value associated with this hypothesis test?NOTE: the following choices are listed as decimals and not percentages.
a) 0.0082
b) 0.3446
c) 0.5000
D) 0.6554
E) 0.9918
Explanation / Answer
Answer to the question below:
1. I think you have not specified the complete question. But however, to help you just substitute the value of X below :
Test statistic = (X - 17.38) / (6.79/sqrt(47))
We are using the Z statistic here because n>30
As you have given a Z = 2.4, lets complete the 2nd part of the problem
2.
Answer A is right
The p value associated with Z = 2.4 is
P(Z>2.4) = 1-.9918 = .0082
This we know from the Z tables.
You can find the Z tables at this link: http://sixsigmastudyguide.com/wp-content/uploads/2014/04/z-table.jpg
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