The arrival time of an elevator in a 12-story dormitory is equally likely at any time range during the next 4.5 minutes. a. Calculate the expected arrival time. (Round your answer to 2 decimal place.) b. What is the probability that an elevator arrives in less than 1.1 minutes

a) The expected arrival time is 2.25 minutes.

b) 25.88% probability that an elevator arrives in less than 1.1 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 probability that we find a value X lower than x is given by the following formula.

The expected value of the uniform distribution is given by:

The arrival time of an elevator in a 12-story dormitory is equally likely at any time range during the next 4.5 minutes.

This means that

a. Calculate the expected arrival time. (Round your answer to 2 decimal place.)

The expected arrival time is 2.25 minutes.

b. What is the probability that an elevator arrives in less than 1.1 minutes

25.88% probability that an elevator arrives in less than 1.1 minutes

answer: i dont know but if you try hard you will get it right : )

step-by-step explanation:

the graph line crosses the x axis at both -6 and -2, so the answer would be the second one.