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Calculate the  t test stat for  testing the claim the average waiting time is more than 20 minutes  also find the pvalue for testing the claim by entering  probability t distribution df=99>test stat  into wolframalpha.com for example if your test is 1,2 enter  probability t distribution df=99>1.2  into wolframalpha.com Note that in question you use wolframalpha.com ,  You might not have access to wolframalpha,com  in the exam but you do have access to the  t table, using the t table   t,0.05,99  =1.66 so you know the Pvalue will be less than 0.05 if the test stat is more than 1.66  a. the Pvalue is 0.01 b. the Pvalue is -0.09 c. the test stat is 2.44 d. the test stat is 2.54

Calculate the  t test stat for  testing the claim the average waiting time is more than 20 minutes  also find the pvalue for testing the claim by entering  probability t distribution df=99>test stat  into wolframalpha.com for example if your test is 1,2 enter  probability t distribution df=99>1.2  into wolframalpha.com Note that in question you use wolframalpha.com ,  You might not have access to wolframalpha,com  in the exam but you do have access to the  t table, using the t table   t,0.05,99  =1.66 so you know the Pvalue will be less than 0.05 if the test stat is more than 1.66  a. the Pvalue is 0.01 b. the Pvalue is -0.09 c. the test stat is 2.44 d. the test stat is 2.54

Calculus For The Life Sciences
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.2: Expected Value And Variance Of Continuous Random Variables
Problem 10E
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suppose in a sample of 100 customer the average   waiting time is   22.54 minutes 
with a standard deviation of 10 minutes 

Calculate the  t test stat for  testing the claim the average waiting time is more than 20 minutes 
also find the pvalue for testing the claim by entering 
probability t distribution df=99>test stat 

into wolframalpha.com
for example if your test is 1,2
enter 
probability t distribution df=99>1.2  into wolframalpha.com

Note that in question you use wolframalpha.com ,  You might not have access to wolframalpha,com  in the exam but you do have access to the  t table,
using the t table   t,0.05,99  =1.66

so you know the Pvalue will be less than 0.05 if the test stat is more than 1.66 

a.
the Pvalue is 0.01
b.
the Pvalue is -0.09
c.
the test stat is 2.44
d.
the test stat is 2.54
 
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