-140 reservations for single rooms were made for a hotel. Assuming each person will not show up with 11% :
a) What is the probability that 127 single rooms are NOT enough?
b) What assumptions are necessary that we can calculate the answer of a) ?

-A normal distribution has the 14% quantile equal to 25 and the 91% quantile equal to 38.
Find the mean and the standard deviation of that normal distribution.

-We assume that the arrivals in a shop follow a Poisson process.
In 40 minutes on average 28 people arrive. Calculate the probability
that the waiting time for the 4th event is larger than 9.54 minutes.

Astudent solves the equation for v. start with the original equation. use the square root property. use the division property of equality. use the multiplication property of equality. simplify. which statement explains how to correct the error that was made? the square root property must be applied after all other properties of equality are applied. the multiplication property of equality should have been applied before the division property of equality. the division property of equality should have been applied to move the fraction to the other side of the equation. the square root property should have been applied to both complete sides of the equation instead of to select variables.