Answer:
chisquare = 31.667
degree of freedom = 2
Step-by-step explanation:
Formula for chisquare test = (O-E)²/E
total number observations= 60 + 25 + 15 = 100
Estimated E,
80% x 100 = 80
15%x100 = 15
5% x 100 = 5
chisquare =

= 5 + 6.67 + 20
= 31.667
from the calculation above the value of the chisquare statistic = 31.67
the degree of freedom is the number of samples in the test n - 1
= 3-1
= 2
I have solve this question also in a tabular form to aid understanding in the file i uploaded.
thank you and good luck!
Answer:
Radius
Step-by-step explanation:
I know the answer
The answer is 16%. 4/25=0.16
If your rate of travel is 25 mph, it will take you 25 times an unknown amount of hours, x, to drive 175 miles.
175 = 25x
Divide both sides by 25.
175/25 = 25x/25
7 = x
Answer:
It will take you 7 hours to drive 175 miles at a speed of 25 mph.