In a simple random sample of size 98, there were 64 individuals in the category of...
In a simple random sample of size 98, there were 64 individuals in the category of interest. It is desired to test H0: p = 0.73 versus H1: p < 0.73. Compute the test statistic z. A) -1.72 B) 0.04 C) 6.19 D) 0.65
Homework Answers
solution:
= x / n = 64/98=0.653
P0 = 0.73
1 - P0 = 1-0.73=0.27
Test statistic = z
=
- P0 / [
P0
* (1 - P0 ) / n]
=0.653-0.73 / [(0.73*0.27)
/ 98]
= -1.72
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