Fan 1 llillulrrstlon 1 In a class where the exam averages we normally distributed, the mean score is 2'5 and the standard deyiation is 1!}. It you Iwant to nd out the probability that a randomly picked student has scored 1% or above, what is the z-yalue that you should look up on the normal distribution table? l[limitation 2 Accorting to a report by Scarborough Research, the average monthly household cellular phone bill is $T3. Suppme local monthly household cell phone bills we normally distributed with a standard deyiation of $11. a. What is the probability that a randomly selected monthly cell phone bill is less than $95? b. IWhat is the probability that a randomly selected monme cell phone bill is between $52 and one