Question

2. A study was set up to look at whether there was a difference in the mean arterial blood pressure between two groups of volunteers, after 6 weeks of following one of two treatment programs. One group of volunteers were given an exercise regimen to follow for the 6 weeks and the other group were given the same exercise regimen with the addition of an experimental tablet. Which type of t-test should be used in this situation?


a. One sample t-test 


b. Independent samples t-test 


c. Paired samples t-test 


d. None of the t-tests would be suitable

Answer 1

.A study was set up to look at whether there was a difference in the mean arterial blood pressure between two groups of volunteers, after 6 weeks of following one of two treatment programs.

Here the two groups are selected. both are the independet of each other.

both have gievn different treatment.

So it is independent t -test for two mean

µ1=mean arterial blood pressure of group 1

µ2=mean arterial blood pressure of group 2

Ho : µ1=µ2

H1 : µ1≠µ2

The independent t-test, also called the two sample t-test, independent-samples t-test or student's t-test, is an inferential statistical test that determines whether there is a statistically significant difference between the means in two unrelated groups.

Answer : b) Independent samples t-test