3 years ago

A horse's lifespan is about 30 years. A horse's lifespan is

Mathematics

1 answer:

kow [346]3 years ago

6 0

Answer:

x = 30 + 56

The lifespan of an elephant is 86 years

Step-by-step explanation:

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A pencil case has 10 blues and 5 reds what is the chance of picking red?

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The partial pressure of oxygen PaO2 is a measure ofthe amount of oxygen in the blood. Assume that the distribution ofPaO2 levels

Rus_ich [418]

Answer: a) 0.8665

b) 0.8190

Step-by-step explanation:

Given : The partial pressure of oxygen PaO2 is a measure ofthe amount of oxygen in the blood. Assume that the distribution ofPaO2 levels among newborns has a $\mu=$ 38 mmHg and $\sigma=$ 9 mmHg.

If we take a random sample n= 25 newborns, then using formula $z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}$ , we have

At x= 36

$z=\dfrac{36-38}{\dfrac{9}{\sqrt{25}}}\approx-1.11$

At x= 41

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The probability that the sample mean will be between 36 and 41 :-

$P(-1.11$

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