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Title: How to solve a question about regarding hypothesis testing problem? Post by: Nwolf82 on Oct 30, 2012 Suppose a researcher wants to investigate the difference between the average ages for males and females students in a university.The researcher thinks that the average age of males is greater than the average age of females.
He used ?= 5% He accepted the the null hypothesis. What is the conclusion about the average ages? Is he 100% sure of this? Title: How to solve a question about regarding hypothesis testing problem? Post by: nxcow on Oct 30, 2012 The average age of males is greater than the average age of females, with a confidence of 95%
Title: How to solve a question about regarding hypothesis testing problem? Post by: firefighter61 on Oct 30, 2012 Your conclusion would be:
The researcher is 95% confident that the average age of a male is greater than the average age of a female at the particular university. voila Title: How to solve a question about regarding hypothesis testing problem? Post by: Fisk71 on Oct 30, 2012 the null hypothesis states that the average male and female age is equal. the alternative hypothesis states that the average male age is higher than the average female age. if your p-value is less than .05 (your ?), then you reject the null hypothesis. if your p-value is greater than .05, then you cannot reject the null hypothesis, meaning that there is still a significant chance that the average ages of males and females may be the same, but that does not automatically mean it's true.
in your question, it specifically states that the researcher accepted the null hypothesis, so that means we conclude that the average male and female age is equal. by the way, we are almost NEVER even close to 100% sure. .....furthermore, ignore every answer that talks about a 95% confidence level. this problem has nothing to do with confidence intervals. |