Friday, April 24, 2009

April 25, 2009 - Quick T/F in class quiz (in class work groups)

1. In a hypothesis test, you assume that the alternative hypothesis is true.

2. Statistical hypotheses are statements about the sample.

3. A type I error is committed when you fail to reject a null hypothesis when it is false.

4. If you want to support a claim, write it as a null hypothesis.

5. When using a P-value to make a conclusion in a hypothesis test with α as significance
level and P ≤ α , you should fail to reject H0.

6. When conducting z-test for mean μ, you should reject the null hypothesis if the P-value
falls within the rejection region.

7. The lower the P-value, the more evidence there is in favor of rejecting H0.

8. The degrees of freedom for a t-test, when n < 30, is equal to the sample size.

7 comments:

  1. Tonya Cox
    Rick Oneil

    1. F
    2. T
    3. F
    4. T
    5. F
    6. F
    7. T
    8. T

    ReplyDelete
  2. Tonya
    Rick

    Ammended

    #6. Should be True

    ReplyDelete
  3. Tonya
    Rick

    Amended

    #2. False
    #4. False
    #8. False

    ReplyDelete
  4. Posted By: Bryan S., Sheila W., Karolyn M., Nick N.
    1) False
    2) False
    3) False
    4) False
    5) False
    6) True
    7) True
    8) False

    ReplyDelete
  5. Mel, John, Evan, Rick
    1. In a hypothesis test, you assume that the alternative hypothesis is true.
    F
    2. Statistical hypotheses are statements about the sample.
    F
    3. A type I error is committed when you fail to reject a null hypothesis when it is false.
    F
    4. If you want to support a claim, write it as a null hypothesis.
    F
    5. When using a P-value to make a conclusion in a hypothesis test with α as significance
    level and P ≤ α , you should fail to reject H0.
    F
    6. When conducting z-test for mean μ, you should reject the null hypothesis if the P-value
    falls within the rejection region.
    T
    7. The lower the P-value, the more evidence there is in favor of rejecting H0.
    T
    8. The degrees of freedom for a t-test, when n < 30, is equal to the sample size.
    F

    ReplyDelete
  6. Gema Meyers
    Rob Shaner

    1 F
    2 F
    3 F
    4 F
    5 F
    6 T
    7 T
    8 F

    ReplyDelete
  7. Justin Kirchmeier
    Jace Wheeler
    Alex Reyes

    1. False
    2. True
    3. False
    4. False
    5. False
    6. True
    7. True
    8. False

    ReplyDelete