Answer:
by alternating the density of the air and the vehical's speed.
Step-by-step explanation:
Answer:
We can reject the hypothesis at the 0.05 significance level.
Step-by-step explanation:
given that an urn contains a very large number of marbles of four different colors: red, orange, yellow, and green. A sample of 12 marbles drawn at random from the urn revealed 2 red, 5 orange, 4 yellow, and 1 green marble.
H0: All colours are equally likely
Ha: atleast two colours are not equally likely
(Two tailed chi square test at 5% significance level)
color Red Orange Yellow Green total
Observed O 2 5 4 1 12
Expected E 3 3 3 3 12
(O-E)^2/E 0.3333 5.3333 0.3333 5.3333 11.3333
chi square = 11.3333
df =3
p value = 0.010055
Since p < 0.05 we reject H0
We can reject the hypothesis at the 0.05 significance level.
Answer:
4/5
Step-by-step explanation:
<u>4/5 = 80%</u>
1/4 = 25%
3/10 = 30%
Answer:
I think it is the first one.
Step-by-step explanation:
I think that becuase it is equal.
Answer:
54
Step-by-step explanation:
18 inches per year * 3 years = 54 inches
