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3 years ago

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Ben and Cam are sucba diving. Ben is 15.8 meters below the surface of the water. Cam is 4.2 meters above Ben.What is Cam’s posit

ion relative to the surface of the water?

2 answers:

makkiz [27]3 years ago

6 0

Realitive to the surface of the water, Cam is 11.6 meters above Ben because in the equation
$x = 15.8 - 4.2$
you would normally subtract first to get X which is the distance from the surface and Ben which is: 11.6

Hitman42 [59]3 years ago

3 0

Answer:

11.6 meters below the surface of the water

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Answer:

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Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For proportions, the mean is $\mu = p$ and the standard deviation is $s = \sqrt{\frac{p(1-p)}{n}}$

In this problem, we have that:

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Step-by-step explanation:

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$\frac{\alpha }{2}$ is just the area of one tail which what we required to calculate the margin of error

Generally the margin of error is mathematically represented as

$MOE = Z_{\frac{\alpha }{2} } * \sqrt{ \frac{\r p(1- \r p )}{n} }$

substituting values

$0.04= 1.96* \sqrt{ \frac{0.48(1- 0.48 )}{n} }$

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