31. A statistics professor has stated that 90% of his students pass the class. To check...
31. A statistics professor has stated that 90% of his students pass the class. To check this claim, a random sample of 150 students indicated that 129 passed the class. If the professor's claim is correct, what is the probability that 129 or fewer will pass the class this semester?
A: 0.0516
B: 0.9484
C: 0.4484
D:0.5516
**According to other posts on this website the answer IS NOT 0.0516**
Homework Answers
Proportion (p0) = 0.90
Total number of sample (n) = 150
number of favourable events (X) = 129
We are interested in testing the hypothesis
Since P-value of a two tailed test is equal to 
P = (1-0.05123449833431231)
P = 0.9484
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