I could probably figure this out, but it lists A, B, and C as points and I don't see them. I assume I'd have to place them somew
here, but I don't know where I would put them.
2 answers:
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Answer:
a. Type I error because the principal rejected the null hypothesis when it was true.
Step-by-step explanation:
We are given that principal of a school believed that his students scored better than the national average. For this principal collected a simple random sample of student SAT scores in math. The sample data collected had a mean student SAT score higher than 550 and the calculated P-value indicated that the null hypothesis should be rejected which means;
Null Hypothesis, :
= 550 {means school's students' SAT scores is the same as the national mean score of 550}
Alternate Hypothesis, :
> 550 {means school's students' SAT scores is higher than the national mean score of 550}
But, in fact, the true population mean of that school's students' SAT scores is the same as the national mean score and P-value indicates that the null hypothesis should be rejected.
Hence error has been occurred.
Type I error states that Probability of rejecting null hypothesis given the fact that is true and this is the case of our question as Principal had rejected the null hypothesis based on p-value but in actual
was true.