3 years ago

3.9 times 10^33 what is the answer to this proble

Mathematics

1 answer:

matrenka [14]3 years ago

7 0

Answer:

39 times ten to the 31

Step-by-step explanation:

you would take off that many decimals to get the answer

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8 inches

Step-by-step explanation:

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x^3=512

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3 years ago

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A researcher wants to estimate the mean weekly family expenditure on clothing purchases and maintenance. First, she needs to det

Blizzard [7]

Answer: C. 461

Step-by-step explanation:

We know that the formula to find the sample size is given by :-

$n=(\dfrac{z^*\cdot \sigma}{E})^2$

, where $\sigma$ = Population standard deviation from prior study.

E = margin of error.

z* = Critical value.

As per given , we have

$\sigma=125$

E= 15

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Critical value (Two tailed)= $z^*=z_{\alpha/2}=z_{0.005}=2.576$

Now , Required sample size = $n=(\dfrac{(2.576)\cdot 125}{15})^2$

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Correct answer = C. 461

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4 years ago