The popping times of the kernels in a certain brand of microwave popcorn are normally distributed, with a mean of 150 seconds and a standard deviation of 13 seconds. the first kernel pops 128 seconds after the microwave oven is started. what is the z-score of this kernel?

$450 is the answer.

step-by-step explanation:

30% of 450 = 135

450-135=315

25 questions , because they start with 100.  

350-100=250 .  

. 250/10=25

step-by-step explanation:

first take off 100, then what x 10 = 250? that is your answer. (25)

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12.4, 12.387, 12.26, 12.252, 6.241, 6.2, 6.015, 6.009, 1.411, 1.2, 1.056, 1.007, 0.31,   0.13, 0.5, 0.04

step-by-step explanation:

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