Question

d. 2 4. A researcher obtains M = 34 with SS = 190 for a sample of n = 10 girls and M = 29 with SS = 170 for a sample of n = 10 boys. If the two samples are used to evaluate the mean difference between the two populations, what value will be obtained for the t statistic? a. á = 1.25 b. = 2.50 Robe lo todo C. $ = 3.54 d. = 5.00
can you olease show the stems i got the answer C but the answer is B

Answer 1

Solution:

Given:

For girls:

M_g = 34

SS_g = 190

n_g = 10

For boys:

M_b = 29

SS_b = 170

n_b = 10

Thus t test statistic is given by:

M, - M \$(+ )

where

s – SS + 33 P nq + nb - 2

190 +170 10-10-2 “P

360

thus

M, - M \$(+ )

34 – 29 t = 20 x (1 + i)

t =- 20 x ()

t = 20 x ()

$t = \frac{5}{\sqrt{ 4}}$

الت |تا = 250

Thus correct option is B.

الت |تا = 250