Question 266196: I need someone to recheck my work to make sure I am correct, thanks a Bunch!!!
1. T F The standard error of the sample mean depends on sigma and z. (True)
2. T F Confidence Interval (CI) for the mu with known sigma is an equation containing mean, z, sigma, and n. (False)
3. The power of a test is dependent on
(a) Alpha
(b) The z test statistic
(c) The t test statistic
(d) Beta
(e) None of the above (This is the answer)
4. T F Larger sample sizes are always better than smaller sample sizes.(False)
5. The end points of a Confidence Interval are called:
(a) Confidence levels.
(b) Test statistics.
(c) The degrees of confidence
(d) The confidence limits (This is the answer)
6. T F The calculation for obtaining a t test statistic is the same as that for a z test statistic except that the population standard deviation is replaced by the sample standard deviation. (False)
7. T F Before the test statistic and p value are determined, it is first necessary to decide whether or not to reject the null hypothesis. (False)
8. T F Psychologists who treated people differently when they conducted experiments using human subjects originally coined the term “treatment.” (False)
9. When a two tail test of the population mean is conducted, the value of the cutoff statistic is obtained from the table by using the value of:
a. α/2
b. α (I think this is the answer)
c. 2α
d. 4α
10. The test statistics for the ration of two sample variances is the __ __ statistic.
a. Z
b. F (I choose this answer)
c. T
d. Chi-Square
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! 1. T F The standard error of the sample mean depends on sigma and z. (True)
2. T F Confidence Interval (CI) for the mu with known sigma is an equation containing mean, z, sigma, and n. (False)
3. The power of a test is dependent on
(a) Alpha
(b) The z test statistic
(c) The t test statistic
(d) Beta
(e) None of the above (This is the answer)
4. T F Larger sample sizes are always better than smaller sample sizes.(False)
5. The end points of a Confidence Interval are called:
(a) Confidence levels.
(b) Test statistics.
(c) The degrees of confidence
(d) The confidence limits (This is the answer)
6. T F The calculation for obtaining a t test statistic is the same as that for a z test statistic except that the population standard deviation is replaced by the sample standard deviation. (False)
7. T F Before the test statistic and p value are determined, it is first necessary to decide whether or not to reject the null hypothesis. (False)
8. T F Psychologists who treated people differently when they conducted experiments using human subjects originally coined the term “treatment.” (False)
9. When a two tail test of the population mean is conducted, the value of the cutoff statistic is obtained from the table by using the value of:
a. α/2
b. α (I think this is the answer)
c. 2α
d. 4α
Comment: I think the answer is alpha/2
-----------------------------------------------
10. The test statistic for the ratio of two sample variances is the __ __ statistic.
a. Z
b. F (I choose this answer)
c. T
d. Chi-Square
---------------------
Comment: If your text tells you to use a z-statistic for means tests
with known sigma go for it. Most modern texts say to use a t-statistic
for means tests.
=================================
Cheers,
Stan H.
|
|
|
