BUAL 2650 Yan Exam 2 Questions
and Answers
what are matched pairs? - -aka matched samples, they are paired up so that
the participants share every characteristic except for the one under
investigation
- If p < 0.10 - -there is SOME evidence to reject H0
- If p < 0.05 - -there is STRONG evidence to reject H0
- If p < 0.01 - -there is VERY STRONG evidence to reject H0
- if p < 0.001 - -there is EXTREMELY STRONG evidence to reject H0
- 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 _________ - -T-test
- when testing a hypothesis about the mean of a population of paired
differences in which two different observations are taken on the same units,
the correct test statistic to use is ______ - -t
- when testing the difference between 2 population proportions using large
independent random samples, the _______ test statistic is used - -z
- if we are testing the hypothesis about the mean of a population of paired
differences with samples of n1=10, n2=10, the degrees of freedom for the t-
statistic is _______ - -9
- D0 - -a number whose value varies depending on the situation. Often D0
will be the number 0
- Assumptions for t-test statistic - -- independent samples
- equal variances
- either normal populations OR large sample sizes
- paired differences experiment - -an experiment in which we have obtained
2 different measurements on the same "n" units is called ________
- ud (mu d) - -the mean of population of paired differences
- dependent (response) variable - -variable we wish to understand/ predict
and Answers
what are matched pairs? - -aka matched samples, they are paired up so that
the participants share every characteristic except for the one under
investigation
- If p < 0.10 - -there is SOME evidence to reject H0
- If p < 0.05 - -there is STRONG evidence to reject H0
- If p < 0.01 - -there is VERY STRONG evidence to reject H0
- if p < 0.001 - -there is EXTREMELY STRONG evidence to reject H0
- 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 _________ - -T-test
- when testing a hypothesis about the mean of a population of paired
differences in which two different observations are taken on the same units,
the correct test statistic to use is ______ - -t
- when testing the difference between 2 population proportions using large
independent random samples, the _______ test statistic is used - -z
- if we are testing the hypothesis about the mean of a population of paired
differences with samples of n1=10, n2=10, the degrees of freedom for the t-
statistic is _______ - -9
- D0 - -a number whose value varies depending on the situation. Often D0
will be the number 0
- Assumptions for t-test statistic - -- independent samples
- equal variances
- either normal populations OR large sample sizes
- paired differences experiment - -an experiment in which we have obtained
2 different measurements on the same "n" units is called ________
- ud (mu d) - -the mean of population of paired differences
- dependent (response) variable - -variable we wish to understand/ predict
