Find the critical value for the following. (It will be a value of z or t)....
Find the critical value for the following. (It will be a value of z or t).
left-tailed, 0.10 level, comparing means from 2 samples with unknown population standard deviation, and n=13 for the first sample and n=14 for the second sample
Homework Answers
solution:
here population standard ddeviation is unknown so we use t test
n1=13
n2=14
left tailed test
df=n1+n2-2
=13+14-2
=25
talpha/2,df=t0.05,25=-1.31634507
=-1.3163(round to four decimals)
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