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4 years ago

(9.5) - (-4.36) (1.094)

Mathematics

1 answer:

Nadya [2.5K]4 years ago

5 0

What are you supposed to do?

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3 years ago

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aleksklad [387]

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Step-by-step explanation:

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4 years ago

I think it's 75 but I'm not sure, still confused. pls help

Mila [183]

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Step-by-step explanation:

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3 years ago

74 is what percent of 462.5

inna [77]

The answer to the equation is 80%

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3 years ago

Some sources report that the weights of full-term newborn babies in a certain town have a mean of 8 pounds and a standard devia

Elodia [21]

Answer:

0.682 is the probability that one newborn baby will have a weight within one standard deviation of the mean.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 8 pounds

Standard Deviation, σ = 0.6 pounds

We are given that the distribution of weights of full-term newborn babies is a bell shaped distribution that is a normal distribution.

Formula:

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

P(weight between 7.4 and 8.6 pounds)

$P(7.4 \leq x \leq 8.6) = P(\displaystyle\frac{7.4 - 8}{0.6} \leq z \leq \displaystyle\frac{8.6-8}{0.6}) = P(-1 \leq z \leq 1)\\\\= P(z \leq 1) - P(z < -1)\\= 0.841 - 0.159 = 0.682 = 68.2\%$

$P(7.4 \leq x \leq 8.6) = 6.82\%$

This could also be found with the empirical formula.

0.682 is the probability that one newborn baby will have a weight within 0.6 pounds of the mean.

7 0

3 years ago