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brunovillarreal6576
03.01.2020 •
Mathematics
Conduct a test at the a=0.05 level of significance by determining (a) null and alternative hypothesis, (b) the test statistic, (c) the p-value. assume the samples were obtained independently from a large population using simple random sampling. test whether p1 > p2. the sample data are x1=117 n1=249 x2=141 n2=312
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Ответ:
Since p > alpha, we accept H0, there is no evidence to prove that p1 is greater than p2
Step-by-step explanation:
Set up hypotheses as
(Right tailed t test)
Alpha = 0.05
Sample I II Total
X 117 141 248
N 249 312 561
p 0.4700 0.4519 0.4420
p difference = 0.0181
Std dev =![\sqrt{p(1-p)(\frac{1}{n_1} +\frac{1}{n_2} )}](/tpl/images/0440/4884/dc62d.png)
=0.0427
z statistic = 0.424
p value = 0.33724
Since p > alpha, we accept H0, there is no evidence to prove that p1 is greater than p2
Ответ: