3 years ago

PLEASE HELP! WILL MARK BRAINLIEST!

Mathematics

1 answer:

vaieri [72.5K]3 years ago

6 0

Answer:

ffdssaaaaaaa

Step-by-step explanation:

fdsssssssssssssss

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The weekly earnings of students in one age group are normally distributed with a standard deviation of 47 dollars. A researcher

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Answer:

Option D) 340

Step-by-step explanation:

We are given the following in the question:

Alpha, α = 0.05

Population standard deviation, σ = $47

Margin of error = 5

95% Confidence Interval:

$\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

$\text{Margin of error} = z_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

$5 = 1.96(\dfrac{47}{\sqrt{n}} )\\\\\sqrt{n} = \dfrac{47\times 1.96}{5}\\\\n = 339.443776\\\Rightarrow n \approx 340$

Thus, the correct answer is

Option D) 340

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Answer:

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Step-by-step explanation:

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Line AB passes through points A (-6,6) and B(12,3). If the equation of the line is written in slope-intercept form, y=mx+b, the.

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Answer:

You wrote the question wrong...

m is not -16 it is -1/6 (that is a big difference)

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Step-by-step explanation:

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