
Pooled Combined Variance 
Test Statistic:



Degrees of freedom = 


The table value is greater than the calculated value.
Thus we accept H0.
A. 18 - 25 because 29% plus 23% equals 52%
Same cause school kinda slow bsndndndndnndnfnfnfnfn sorry I need the points
Answers:
___________________________In fraction:

.
___________________________In decimal:
0.38 .
_________________In percent:
38 % .
_________________Explanation:_________________19/50 = (19*2)/(50*2) = 38/100 .
38/100 = 38 ÷ 100 = 0.38 .
38/100 = 38 % .
___________________________
It is equivalent too 5.3 and 5.30