I’m pretty sure they all are real numbers-
Complete question :
Suppose you know that the prices paid for cars are normally distributed with a MEAN or $17,000 and a STANDARD DEVIATION of $500. Use the EMPIRICAL RULE to find the percentage of buyers who paid between 15500 and 17000
Answer:
49.85%
Step-by-step explanation:
Mean = 17000
Standard deviation = 500
Obtain the Z score, which is the number of standard deviations from the mean :
((17000 - 17000) / 500) = 0
((15500 - 17000) / 500) = - 3
-3 to 3 = (3 standard deviations)
However,
The value here is (-3 to 0) ; which is only 3 standard deviations to the left.
3 standard deviation = 99.7% (empirical rule)
Since it is only (-3 to 0) ; which is only 3 standard deviations to the left. ; the percentage will be halved
99.7% / 2 = 49.85%
Hence, percentage of buyers who paid between 15500 and 17000 is 49.85%
Answer:
$222.04
Step-by-step explanation:
Use the compound amount formula A = P(1 + r/n)^(nt), where n is the number of times interest is compounded per year, t is the number of years and r is the interest rate as a decimal fraction.
Here, A = ($200)(1 + 0.035/4)^(4*3), or
= ($200)(1.00875)^(12) = $200(1.11) = $222.04
The compound amout after 4 years (12 compounds) will be $222.04.
Answer:0.9966
Step-by-step explanation:
Given
Probability that flash light does not work is 
If owner has 3 three flashlights then
Probability that atleast one of them works 
Probability that flashlight will work 
Required Probability
Now, Probability that second works given that first works is given by
Answer:
if the two lines have the same slope that means they are parallel
