In testing the difference between the means of two normally distributed populations
using independent random samples with equal variances, the correct test statistic to
use is the
A. z stat.
B. t stat.
C. F stat.
D. chi-square stat.
E. none of the above
Give this one a try later!
B, t statistic
(because we used the pooled estimate of the variance)
, Estimate the value of correlation coefficient based on the graph.
A. r=1
B. positive r
C. negative r
D. r is near 0.
Give this one a try later!
C, negative r
In multiple regression analysis, the mean square regression divided by mean square
error yields the ___________.
A. standard error
B. F statistic
C. R^2
D. adjusted R^2 or R^2
E. t statistic
Give this one a try later!
B. F statistic
(F = MSR/MSE)
A simple regression analysis with 20 observations would yield ________ degrees of
freedom error and _____________ of freedom total.
A. 1,20
B. 18,19
C. 19,20
D. 1,19
Give this one a try later!
using independent random samples with equal variances, the correct test statistic to
use is the
A. z stat.
B. t stat.
C. F stat.
D. chi-square stat.
E. none of the above
Give this one a try later!
B, t statistic
(because we used the pooled estimate of the variance)
, Estimate the value of correlation coefficient based on the graph.
A. r=1
B. positive r
C. negative r
D. r is near 0.
Give this one a try later!
C, negative r
In multiple regression analysis, the mean square regression divided by mean square
error yields the ___________.
A. standard error
B. F statistic
C. R^2
D. adjusted R^2 or R^2
E. t statistic
Give this one a try later!
B. F statistic
(F = MSR/MSE)
A simple regression analysis with 20 observations would yield ________ degrees of
freedom error and _____________ of freedom total.
A. 1,20
B. 18,19
C. 19,20
D. 1,19
Give this one a try later!
