Ateacher is experimenting with a new computer-based instruction and conducts a study to test its effectiveness. in which situation could the teacher use the two-sample t-test for comparing two population means?

From a normally distributed population,  if two samples of size less than 30 taken out , then we use t-test to test the difference between the population means.

The conditions which are necessary to use a t-test are :-

1. Each population must have normal distribution.

2. Both the samples must be independent.

Now, if a teacher is experimenting with a new computer-based instruction and conducts a study to test its effectiveness, then to use a t-test all the above conditions are necessary.

in mathematics, a constraint is a condition of an optimization problem that the solution must satisfy. there are several types of constraints—primarily equality constraints, inequality constraints, and integer constraints. the set of candidate solutions that satisfy all constraints is called the feasible set.

hoped i'm right lol

y= 2x+7

changed to y= 5x +7

as slope is increased from 2 to 5

therefore it would be less steeper

so, option d) is correct