Question

Which condition must be met to perform the two-sample t test?

Answer 1

Data in each group must be obtained via a random sample from the population.

A two-sample t-test is used when you want to compare two independent groups to see if their means are different.

Answer 2

See below

Explanation:

A two-sample t test must meet the following conditions:

• Both samples are random samples taken from their respective populations and are independent of each other
• Population variances are equal and unknown
• Parent populations from which samples are drawn must be normally distributed