How would you find these? What formula can I use and would I need to use...
How would you find these? What formula can I use and would I need to use Minitab to get the answers?
(a) z=-0.99 for a left tail test for a mean
Round your answer to three decimal places.
(b) z=4.20 for a right tail test for a proportion
Round your answer to three decimal places.
(c) z=-1.53 for a two-tailed test for a difference in
means
Round your answer to three decimal places.
Homework Answers
Answer)
You can solve these by looking into standard normal z table
A)
Left tailed means <
From z table, P(z<-0.99) = 0.1611
B)
Right tailed, means >
From z table, P(z>4.2) = 0
C)
From z table, P(z<-1.53) = 0.063
As the test is two tailed, answer is 2*0.063 = 0.126
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