Afair coin is tossed 100,000 times. the number of heads is recorded. what is the probability that there are between 49,800 and 50,200 heads?

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?

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Find the circumference of a pizza with a diameter of 10 inches round to the nearest tenth