For Ho: u=90, Ha: u>90, n=150, ybar follows normal distribution, test statistic = Zo= 1.37, a=...
For Ho: u=90, Ha: u>90, n=150, ybar follows normal distribution, test statistic = Zo= 1.37, a= 0.05, find the critical value, p-value and give conclusion.
Homework Answers
solution:
Test statistic = 1.37
P(z >1.37 ) = 1 - P(z < 1.37) = 1 - 0.9147=0.0853 using z table
P-value = 0.0853
=0.05
critical value Z
=Z0.05=-1.645
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For Ho: u=90, Ha: u>90, n=150, ybar follows normal
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