for each of the cases below, show the appropriate t-value and the approximate normal z value....
for each of the cases below, show the appropriate
t-value and the approximate normal z value. when a- confidence
level=80%,df=40
and b- confidence level=99%,df=9
Homework Answers
a. C = 0.80, df = 40
t value :
( We look into t table across df = 40 and probability 0.20 for two tailed or 0.10 for one tailed and find t value across it )
Z value :
( We look in to the probability section of normal probability table for the probability 0.90 and find z value across it )
b.
C = 0.99, df = 9
t value :
( We look into t table across df = 9 and probability 0.01 for two tailed or 0.005 for one tailed and find t value across it )
Z value :
( We look in to the probability section of normal probability table for the probability 0.995 and find z value across it )
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