Hypothesis Testing - Personal.kent.edu
... 3. Determine whether to use one- or twotailed test, determine what value of α to use (usually .05), and identify the rejection region(s) that the critical t is the boundary of ...
... 3. Determine whether to use one- or twotailed test, determine what value of α to use (usually .05), and identify the rejection region(s) that the critical t is the boundary of ...
Chapter 7 Definitions, Basic Concepts
... You may think of the null hypothesis as the ”favored” hypothesis; we reject it in favor of the alternative hypothesis Ha if and only if the evidence provided by the sample data is strongly against H0 and in favor of Ha . Definition: The alternative (research) hypothesis, denoted Ha , represents the ...
... You may think of the null hypothesis as the ”favored” hypothesis; we reject it in favor of the alternative hypothesis Ha if and only if the evidence provided by the sample data is strongly against H0 and in favor of Ha . Definition: The alternative (research) hypothesis, denoted Ha , represents the ...
t - Wharton Statistics
... • There is a duality between confidence intervals and hypothesis tests • We can construct a level hypothesis test based on a level 100(1 )% confidence interval by rejecting H 0 : 0 if and only if is not in the confidence interval • We can construct a level100(1 )% confidence interva ...
... • There is a duality between confidence intervals and hypothesis tests • We can construct a level hypothesis test based on a level 100(1 )% confidence interval by rejecting H 0 : 0 if and only if is not in the confidence interval • We can construct a level100(1 )% confidence interva ...
Doing Statistics by Rule-of-Thumb.
... Now, formal z-tests obey this equation, as do Student’s t-tests. All we need to do is figure out z. If one wishes to be precise, z varies with the test; one-sided tests differ from two-sided tests t-tests differ from z-tests, t-test differ amongst themselves depending on the sample size, and it all ...
... Now, formal z-tests obey this equation, as do Student’s t-tests. All we need to do is figure out z. If one wishes to be precise, z varies with the test; one-sided tests differ from two-sided tests t-tests differ from z-tests, t-test differ amongst themselves depending on the sample size, and it all ...
Statistics Summary Excercises
... 55. If the researcher wants to construct a 94% confidence interval estimate of the mean flight time between Albuquerque and Dallas to within 1.5 minutes, how large a sample must be obtained? 56. A 95% confidence interval is constructed from a sample of size 100. If the sample size is increased to 20 ...
... 55. If the researcher wants to construct a 94% confidence interval estimate of the mean flight time between Albuquerque and Dallas to within 1.5 minutes, how large a sample must be obtained? 56. A 95% confidence interval is constructed from a sample of size 100. If the sample size is increased to 20 ...
