SOLUTION: In a test of the difference between the two means, what should the test value be for a t test? SAMPLE 1: Mean 80, Variance 550, Size 10 SAMPLE 2: Mean 135, Variance 100, Size 1

Algebra ->  Probability-and-statistics -> SOLUTION: In a test of the difference between the two means, what should the test value be for a t test? SAMPLE 1: Mean 80, Variance 550, Size 10 SAMPLE 2: Mean 135, Variance 100, Size 1      Log On


   



Question 1087273: In a test of the difference between the two means, what should the test value be for a t test?
SAMPLE 1: Mean 80, Variance 550, Size 10
SAMPLE 2: Mean 135, Variance 100, Size 14

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Variance known, small sample size.
So then,

t=%28%2880-135%29-%280%29%29%2Fsqrt%28550%2F10%2B100%2F14%29%29
t=%28-55%29%2Fsqrt%28435%2F7%29%29
t=%2811%2F87%29sqrt%283045%29