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MaRussiya [10]
3 years ago
12

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 11 seconds.
The first kernel pops 126 seconds after the microwave oven is started. What is the z-score of this kernel?

Also what in the world is a z-score?
Mathematics
2 answers:
RSB [31]3 years ago
6 0
The z-score of the data can be calculated by the formula expressed as follows:

z = ( score - mean ) / standard deviation
z = (126 - 150 ) / 11 = <span>-2.18
</span>
A z-Score<span> is a statistical </span>measurement<span> of a </span>score's<span> relationship to the mean in a group of </span>scores<span>. A </span>Z-score<span> of 0 means the </span>score<span> is the same as the mean.</span><span>

</span>
Anit [1.1K]3 years ago
4 0

Answer:

the right answer is  -2.18

Step-by-step explanation:

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