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3 years ago

8

You estimate that a jar contains 68 marbles. The actual number of marbles is 60. Find the percent error. Round your answer to th

e nearest tenth.

1 answer:

seraphim [82]3 years ago

5 0

60 is already rounded to the nearest tenth.

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What’s the answer to this

Ipatiy [6.2K]

2.4/0.3=8
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The scale factor is 8.

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3 years ago

5 - (-9 ) subtracting intergers

ruslelena [56]

Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of 0.917 g and a standard deviation

Nutka1998 [239]

Answer:

$z = \frac{0.872-0.917}{\frac{0.303}{\sqrt{37}}}= -0.903$

And we can find this probability to find the answer:

$P(z$

And using the normal standar table or excel we got:

$P(z$

Step-by-step explanation:

Let X the random variable that represent the amounts of nocatine of a population, and for this case we know the distribution for X is given by:

$X \sim N(0.917,0.303)$

Where $\mu=0.917$ and $\sigma=0.303$

We have the following info from a sample of n =37:

$\bar X= 0.872$ the sample mean

And we want to find the following probability:

$P(\bar X \leq 0.872)$

And we can use the z score formula given by;

$z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}$

And if we find the z score for the value of 0.872 we got:

$z = \frac{0.872-0.917}{\frac{0.303}{\sqrt{37}}}= -0.903$

And we can find this probability to find the answer:

$P(z$

And using the normal standar table or excel we got:

$P(z$

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3 years ago

I participated in a math competition but I did not do very good. Does anybody have some tips?

Stells [14]

Study 5 times on the subject you are focusing on.

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3 years ago

Casey said that 0.03*1,000 is 3 explain why caseys answer is wrong what mistake do u think he made

Igoryamba

<span>0.03 x 1,000=30! In multiplying decimals, you'll move the decimal's period to the number of zeroes in the multiplier! 1,000 has 3 zeroes. So, it's equal to 30. So basically he was wrong because 0.03 times 1,000 doesn't equal 3 it equals 30. He made the mistake of not moving the decimal point enough.</span>

6 0

3 years ago