emasomo.cuk.ac.ke/i 15 15:54 0 Question 5 Not yet answered Marked out of 5.00 Flag question 52 Time left 1:05:53 A 100-watt light bulb has an average brightness of 1560 lumens with a standard. deviation of 52 lumens. a) What is the probability that a 100-watt light bulb will have a brightness more than 1700 lumens? i) Give the z-value(In 2dp): ii)Probability: b) What is the probability that a 100-watt bulb will have a brightness less than 1450 lumens? c) What is the probability that a 100-watt bulb will have a brightness between 1500 and 1600 lumens?