The number of wave cycles in a given unit of time is called the wave

The number of passengers who arrive at the platform of a subway station for the 10 am train is a random variable with a mean of 120 and a variance of 16. find the lower bound of the probability that there will be between 100 and 140 passengers (round off to second decimal place).

What does si stand for, when referring to a system of measurement

The energy produced as a result of this flow of electrons from atom to atom is called