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3 years ago

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

Mathematics

1 answer:

Alinara [238K]3 years ago

6 0

Answer: a) 6

Step-by-step explanation:

The mean is 375 which has a z-score of 0.

The standard deviation is 24 so:

z-score of 1 is: 375 + 24 = 399
z-score of 2 is: 399 + 24 = 423
z-score of 3 is: 423 + 24 = 477

A z-score of 3 is 99.85% from the left (or 1 - 99.85% from the right = 0.15%)

Since we are looking for the "more than" a z-score of 3, it is 0.15% of the total.

4000

× 0.0015

6.0000

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