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pshichka [43]
3 years ago
10

Find f(-3) if f(x)=x^2

Mathematics
1 answer:
lbvjy [14]3 years ago
3 0

Answer:

9

Step-by-step explanation:

(- 3)( - 3) = 9

Remember, a negative times a negative equals a positive.

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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

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Using table for z-values, the probability that the sample mean will be greater than 36 :

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

P(-1.11

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