suppose a brand of light bulbs is normally distributed, with a mean life of hr and a standard deviation of find the probability that a light bulb of that brand lasts between hr and hr. . . . question content area top right part 1 areas under the standard normal curve z a z a 1.00 .3413 1.50 .4332 1.10 .3643 1.60 .4452 1.20 .3849 1.70 .4554 1.30 .4032 1.80 .4641 1.40 .4192 1.90 .4713 question content area bottom part 1 the probability that a light bulb will last between hr and hr is enter your response here. (type an integer or decimal rounded to four decimal places as needed.)