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OpenStudy (anonymous):
he 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 11 seconds. The first kernel pops 126 seconds after the microwave oven is started. What is the z-score of this kernel? Round your answer to two decimal places.
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OpenStudy (anonymous):
@ankit042
OpenStudy (anonymous):
the *
OpenStudy (anonymous):
@mathstudent55 @mathmate
OpenStudy (ankit042):
you remember we did x = mean +z(std dev) x = 126 here and mean = 150 you can get z score
OpenStudy (anonymous):
how?
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OpenStudy (ankit042):
126 = 150 + z(11)
OpenStudy (anonymous):
i dont get it?
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