google "large sample test of hypothesis about a population proportion"
Hello,
I am trying to complete what seems to be an easy problem, but I am stumped.
Using the theory (null hypothesis) that a genetic trait is produced p=.25
Using random sampling of 100 crosses, the trait is produced p=.31
(I believe null hyp is H0= p=.25; ha= p>.25)
What is the test statistic?
All our notes use the formula: T-stat= (sample mean-expected mean)/(sample standard dev/ sqrt(sample size))
but I don't know how to come up with the standard deviation.
Thank you!
(In a previous example in the powerpoint: normal cholesterol levels= 225. a study with 43 subjects yielded a mean cholesterol level of 237.98. And then it says sample SD= 38.54. I'm not sure if he is saying he found the sample SD or it was known. If he calculated it, I have no idea how.
Last edited by dorothy8; 03-05-2017 at 02:55 PM.
google "large sample test of hypothesis about a population proportion"
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