121'
48 plus 70=118
360-118=242
242/2=121
10-4=6. can it be like this.
Answer:
The mean is 11.5 minutes and the standard deviation is of 6.64 minutes
Step-by-step explanation:
An uniform probability is a case of probability in which each outcome is equally as likely.
For this situation, we have a lower limit of the distribution that we call a and an upper limit that we call b.
The mean is:

The standard deviation is:

Arrival time of 9:18 am and a late arrival time of 9:41 am.
9:41 is 23 minutes from 9:18. So the time is uniformily distributed between 0 and 23 minutes, so a = 0, b = 23.
Mean:

Standard deviation:

The mean is 11.5 minutes and the standard deviation is of 6.64 minutes
It's the reflexive property because it's just relating it to itself (def. of reflexive)
As we all know: A=A, B=B, mx=mx, nothing changes.
So the answer is D
70 × 20%
70 × .20 = .14
so .70 - .14 = $.56