How to get the radical answer simplified

Mathematics

1 answer:

SSSSS [86.1K]2 years ago

3 0

For 61 you can change it to √25/√49. √25=5 and √49=7 so it would simplify to 5/7.

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Katena32 [7]

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a) 81.5%

b) 95%

c) 75%

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 266 days

Standard Deviation, σ = 15 days

We are given that the distribution of length of human pregnancies is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

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b) a) P(last between 236 and 296)

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