Mike is performing a 1-Proportion Z test to see if the proportion of classrooms at his...
Mike is performing a 1-Proportion Z test to see if
the proportion of classrooms at his high school
is greater than
0.38
. He randomly sampled
120
classrooms and finds the test statistic to be
1.35
.
Calculate the p-value.
Homework Answers
Give that
Alternative hypothesis
HE : p > 0.38. ( is a right tailed hypothesis)
And test statistics Z = 1.35
Find the pvalue
By using z table
Find the probability for a 1.35 we get 0.9115
Therefore pvalue = 0.9115
By using Excel
Excel command
= normadist(1.35)
We get 0.9115
Therefore pvalue = 0.9115
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