Author Question: What is the pooled estimate of the population variance? A) (14/36)(6.5) + (22/36)(4.5) = 5.28 ... (Read 61 times)

Cooldude101 · **on:** Jun 20, 2018

What is the pooled estimate of the population variance?

A) (14/36)(6.5) + (22/36)(4.5) = 5.28
B) (15/38)(6.5) + (23/38)(4.5) = 5.29
C) (15/23)(6.5) + (23/15)(4.5) = 11.14
D) (14/22)(6.5) + (22/14)(4.5) = 11.21

Question 2

If the standard deviation of the distribution of the difference between means is 0.76, what is the t score?

A) (15 23) /0.76 = 10.53
B) (0.76)(15 23) = 6.08
C) (6.5 + 4.5)/20.76 = 4.18
D) (55 51) /0.76 = 5.26