The answer to your question is B. 65
Answer:
Shortest=5, medium=9, longest=10
Step-by-step explanation:
x+x+5+x+4=24
3x+9=24
3x=15
x=5
Answer:
39.5
Step-by-step explanation:
angle ABC=60=(5x+2)+(3x-2)
60=8x
x=7.5
Angle ABD=(5x+2),(sub x=7.5)
=(5*7.5+2)
=39.5
Answer:
Step-by-step explanation:
Let X represent for males and Y for females
Given that
Group Group One Group Two
Mean 84.00 78.00
SD 4.00 8.00
SEM 1.26 2.53
N 10 10
SEM is calculated as
for each group

(Two tailed test at 5% significance level)

Since p <0.05 we reject H0 and there is significant difference between the groups.
A.Exam scores were significantly higher in the male group, t(18) = 2.83, p < .05B
Well, a circle is 360 degrees so...
2/9 of 360 = 80
The answer is 80 degrees.
I hope this helps; and if I'm wrong, then I'm very sorry. :)