Question

The probability that Shania is on time for school is 1/2. Find the probability that Shania arrives on time for school for the next 5 days. Express your answer as a percent, to the nearest tenth of a percent. A. 50% B. 15.6% C. 11.4% D. 3.1%

Answer 1

Answer: 3.1 %

Step-by-step explanation:

Given : The probability that Shania is on time for school is $\dfrac{1}{2}$

Since the each day is independent of other.

Then , the probability that Shania arrives on time for school for the next 5 days will be :_

$=(\dfrac{1}{2})^5=\dfrac{1}{32}=0.03125\approx3.125\%\approx3.1\%$

Hence, the  probability that Shania arrives on time for school for the next 5 days.  = 3.1 %

Answer 2

1/2*1/2*1/2*1/2*1/2
= 1/2!
= 1/32
= 0.0313
= 3.1%
The answer is D.
Hope this helps. :)