Hypothesis Testing (t-Test) Video Lessons

Video Thumbnail

Concept: In order to measure the similarities and differences between populations we utilize a t score. 

Video Thumbnail

Problem: The concentrations of exhaust fumes were measured from two different sources. Source A: 28.0 ± 15.0 μ/m3     (18 measurements)Source B: 43.7 ± 15.0 μg/m3    (18 measurements)Do these results differ at the 95% confidence level?

FREE Expert Solution
Problem Details

The concentrations of exhaust fumes were measured from two different sources. 

Source A: 28.0 ± 15.0 μ/m3     (18 measurements)

Source B: 43.7 ± 15.0 μg/m3    (18 measurements)

Do these results differ at the 95% confidence level?

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Hypothesis Testing (t-Test) concept. You can view video lessons to learn Hypothesis Testing (t-Test). Or if you need more Hypothesis Testing (t-Test) practice, you can also practice Hypothesis Testing (t-Test) practice problems.

What is the difficulty of this problem?

Our tutors rated the difficulty ofThe concentrations of exhaust fumes were measured from two d...as medium difficulty.

How long does this problem take to solve?

Our expert Analytical Chemistry tutor, Jules took 5 minutes and 8 seconds to solve this problem. You can follow their steps in the video explanation above.