Write an equation and solve for x. Show all your work.
2 answers:
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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
For this case we have the following equation:
Rewriting we have:
We raise both members of the equation to the square:
Rewriting we have:
It's a extraneous solution because equality is not met by substituting x = 10 in the original equation:
Answer:
The solution is:
It's a extraneous solution
Rewriting we have:
We raise both members of the equation to the square:
Rewriting we have:
It's a extraneous solution because equality is not met by substituting x = 10 in the original equation:
Answer:
The solution is:
It's a extraneous solution