<span>The answer is D. $12.26. The cost is $0.14 per 1 mile. The question is how much will be per 87.6 miles. Make a proportion: $0.14 per 1 mile. x per 87.6 miles. $0.14 : 1 mile = x : 87.6 miles. Cross the products: x * 1 mile = $0.14 * 87.6 miles. x * 1 mile = $12.26 per mile. x = $12.26 per mile / 1 mile. x = $12.26.</span>
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Answer:
Refer below
Step-by-step explanation:
a) a and b are the lower and higher values of the interval for which uniform distribution is defined.
Here a= 6 and b =10
b) Mean of the uniform distribution= (a+b)/2 = (6+10)/2 =8
Or int x (1/4) dx = x^2/8 = 8
c) Variance of the uniform distribution = (b^2-a^2)/12 = (100-64)/12
= 36/12 =3
Std dev = sq rt of 3 = 1.732
d) To find total area
PDF of the distribution = 1/(b-a) = 1/4, 6<x<10
Area = \int 6 to 10 of 1/4 dx
= x/4
Subtitute limits
= (10-6)/4 =1
So total area = 1
d)P(X>7) = int 7 to 10 of 1/4 dx = 3/4
e) P(7<x<9) = Int 7 to 9 of 1/4 dx = 2/4 = 1/2
I know number 15 is right
False test with 10 questions
