PSTAT EXAM 4 COMPLETE QUESTIONS
WITH CORRECT DETAILED ACCURATE
SOLUTION.GRADE A+
Student's t test for single samples using difference scores - answer ✔✔-student's t test for correlated
groups really reduces to
true - answer ✔✔-As N gets infinitely large, the critical value of t equals the critical value of z.
a weighted average of s1^2 and s2^2 - answer ✔✔-In the t test for independent groups, the unbiased
estimate of the population variance is
flattens - answer ✔✔-As df moves away from infinity, the t distribution
Sample standard deviation
Population mean
Sample size - answer ✔✔-Which of these values is NOT known when performing the single sample t-
test?
n-1 - answer ✔✔-The df for the single sample t is equal to
wider than - answer ✔✔-The 99% confidence interval will be _______ the 95% confidence interval
It is identical to the z distribution - answer ✔✔-Which is NOT true of the sampling distribution of t?
increase - answer ✔✔-With other factors held constant, as the sample size decreases, the width of the
confidence
interval will
it is a family of many curves that varies with degrees of freedom
it is symmetrical
it has a mean of 0 - answer ✔✔-Properties of the t distribution?
raw; difference - answer ✔✔-The independent group design involves analysis of the ______ scores and
the repeated
measures design involves analysis of the ______ scores
The t-test uses information on the direction of the difference scores
WITH CORRECT DETAILED ACCURATE
SOLUTION.GRADE A+
Student's t test for single samples using difference scores - answer ✔✔-student's t test for correlated
groups really reduces to
true - answer ✔✔-As N gets infinitely large, the critical value of t equals the critical value of z.
a weighted average of s1^2 and s2^2 - answer ✔✔-In the t test for independent groups, the unbiased
estimate of the population variance is
flattens - answer ✔✔-As df moves away from infinity, the t distribution
Sample standard deviation
Population mean
Sample size - answer ✔✔-Which of these values is NOT known when performing the single sample t-
test?
n-1 - answer ✔✔-The df for the single sample t is equal to
wider than - answer ✔✔-The 99% confidence interval will be _______ the 95% confidence interval
It is identical to the z distribution - answer ✔✔-Which is NOT true of the sampling distribution of t?
increase - answer ✔✔-With other factors held constant, as the sample size decreases, the width of the
confidence
interval will
it is a family of many curves that varies with degrees of freedom
it is symmetrical
it has a mean of 0 - answer ✔✔-Properties of the t distribution?
raw; difference - answer ✔✔-The independent group design involves analysis of the ______ scores and
the repeated
measures design involves analysis of the ______ scores
The t-test uses information on the direction of the difference scores
