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Basic Question 4 of 13
For the hypothesis test shown below, the decision should be to ______.
B. fail to reject H0
C. reject H0
A. conclude Ha
B. fail to reject H0
C. reject H0
User Contributed Comments 10
| User | Comment |
|---|---|
| Yurik74 | How -2.33 is calculated??? I understand that -3.71 = (16.1-17)/(2.3/sqrt(90)) |
| surjoy | Z 0.01 is 2.33 |
| JKiro | Yurik74: critical values (rejection points) are determined by the experimenters |
| VGVG | Isn't this a one-tailed test? And for a one-tailed test, the decision rule is: Reject H0 if z > z-alpha. In this case, z-score of -3.71 can't be > -2.33 |
| VGVG | Never mind, this is a one-tailed test with: H0: u >= u0, and for this the rejection clause is: z < -z-alpha |
| thekid | PLeAse ExplAin the following: "Note- the p-value for an x-bar of 16.1 is 0+." How did they get this? What does that mean? |
| bhaynes | thekid: the smaller the p-value, the higher the chance that we are going to reject the null and accept the alternate. For the values above, we can check the z-table for our z-stat of -3.71 and see the p-value of .0001. That's pretty low. That means that we can say with a 99.99% chance, that we should reject the null. Remember......As the p-value shrinks, so does our confidence in the null. |
| johntan1979 | alpha of .01 for two-tailed is 2.58, one-tailed is 2.33 |
| ldfrench | HAS ANYONE SEEN MY DOG???? |
| farhan92 | hes on the derivatives section... |
I am using your study notes and I know of at least 5 other friends of mine who used it and passed the exam last Dec. Keep up your great work!
Barnes
Learning Outcome Statements
explain hypothesis testing and its components, including statistical significance, Type I and Type II errors, and the power of a test
CFA® 2025 Level I Curriculum, Volume 1, Module 8.