PR 309 Final Exam 2 Questions With
Solved Actual Answers 2025.
T-Test - Answer This type of test is a group comparison that compares two averages and tells
you not only if they are different, but also the significance in the differences.
Assignment to one of no more than two variables is required--Independent variable.
Three types of this type of test.
(one sample, two sample, and paired sample)
T-Test Process - Answer Process differs slightly between the three types because they are
testing different things, but some things stay the same in the process:
1.Check Assumptions
--The sample is random.
--The population from which the sample is drawn is either normal or the sample size is large.
2. Calculate the test statistic
--Check the P-Value
3. Write a conclusion
Each process has some differing factors in the process:
1. One Sample T-Test: standard
2. Two Sample T-Test:
--The two samples must be random and independent
--Populations have same standard deviation
3. Paired Sample T-Test:
--The data is matched pairs.
one sample t-test - Answer This type of T-Test is used to determine whether the population
mean is different from a specified value. Also used when trying to figure out whether a sample
comes from a particular population but the full population information isn't provided.
Solved Actual Answers 2025.
T-Test - Answer This type of test is a group comparison that compares two averages and tells
you not only if they are different, but also the significance in the differences.
Assignment to one of no more than two variables is required--Independent variable.
Three types of this type of test.
(one sample, two sample, and paired sample)
T-Test Process - Answer Process differs slightly between the three types because they are
testing different things, but some things stay the same in the process:
1.Check Assumptions
--The sample is random.
--The population from which the sample is drawn is either normal or the sample size is large.
2. Calculate the test statistic
--Check the P-Value
3. Write a conclusion
Each process has some differing factors in the process:
1. One Sample T-Test: standard
2. Two Sample T-Test:
--The two samples must be random and independent
--Populations have same standard deviation
3. Paired Sample T-Test:
--The data is matched pairs.
one sample t-test - Answer This type of T-Test is used to determine whether the population
mean is different from a specified value. Also used when trying to figure out whether a sample
comes from a particular population but the full population information isn't provided.
