The median rainfall during a spring storm in the lowlands is about 4 mm less then a spring storm in the highlands. The mean rainfall for the lowlands it's about 3 mm less than for the Highlands. Why is there a difference in the central's measures for each data set?

Need to increase the numbers of customers i talk to daily by 20% how many customers do i need to talk to if i talk to a average of 8 customers per hour during an 8 hour shift

Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )

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?