Answer:
The 90% confidence interval would be given by (0.466;0.694)
Step-by-step explanation:
The estimated proportion of interest would be:
In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 90% of confidence, our significance level would be given by 
and 
. And the critical value would be given by:
The confidence interval for the mean is given by the following formula:
If we replace the values obtained we got:
The 90% confidence interval would be given by (0.466;0.694)
Here is a proportion
5/2 = x/8
2x = 40
/2 /2
x = 20
Hope this helps
18/35 is halfway between 3/5 and 5/7. Do you want me to explain or just the answer?
Given that the original cost of the car is $24000 and it depreciates at the rate of 7%, the function that will represent the value of the car after 10 years will be given by:
f(x)=p(r)^t
where:
p=current cost
r=rate
t=time
but
p=24000, r=100-7=93%=0.93, t=10
thus the function that models the value of the car after 10 years is:
f(x)=24000(0.93)^10
Answer: <span>A) f(x) = 24,000(0.93)^10</span>
X - 8y - (2x - 4y) =
x - 8y - 2x + 4y =
-x - 4y.......Ax + By....the value of B is -4
