We conduct a simulation to mimic randomly sampling from a population with of college graduates. In the population 62% had studen
1 answer:
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Answer:
9.694 years
Step-by-step explanation:
Let the investment is $P.
So, we are asked to determine the time it will grow to triple with the compound interest rate of 12%.
Let the time is y years.
So, from the formula of compound interest we can write
⇒
⇒
Now, taking log both sides we get,
y log 1.12 = log 3 {Since, }
⇒ 0.04922y = 0.477712
⇒ y = 9.694 years (Answer)
Answer:
mean ≈ 25.45
Step-by-step explanation:
mean is calculated as
mean =
We require the sum for both classes
class A
mean = = 40 ( multiply both sides by 9 )
sum = 9 × 40 = 360
class B
mean = = 20 ( multiply both sides by 24
sum = 24 × 20 = 480
Total sum for both classes = 360 + 480 = 840 , then mean for both classes is
mean = ≈ 25.45 ( to 2 dec. places )