Choose a quadratic inequality that satisfies the following conditions. All the values of a, b, and c of the quadratic expression are negative, and the value of its quadratic expression is at most 20.

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable

Empty box + box + empty box fill in the box is equal to 30 how

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?