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Setler79 [48]
3 years ago
7

A result of Japan s attack on Pearl Harbor was A, the US formed a pact with Indochina against Japan.

Mathematics
1 answer:
stich3 [128]3 years ago
8 0
<span>the answer is c. this is the correct answer because the attack on Pearl Harbor killed many Americans, and was the event that caused the US to finally enter the world war</span>
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PLEASE HELP?! IM SO CONFUSED!!
Andre45 [30]

Answer:

C.

Step-by-step explanation:

-3 7/8 rounds down to -4

4.63 rounds up to 5

-4 x 6 + 5

-24 + 5

-19

her answer (-19.14) also rounds to -19

So yes, it is reasonable and the correct response is C.

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2 years ago
Please help me with these two.
Bad White [126]

Just 9

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Suppose that a fast food restaurant decides to survey its customers to gauge interest in a breakfast menu. After surveying multi
Harlamova29_29 [7]

Answer:

ME= \frac{Width}{2}=\frac{0.078}{2}=0.039

\hat p =0.688+0.039=0.727

\hat p =0.766-0.039=0.727

Step-by-step explanation:

Assuming that the confidence interval is (0.688; 0.766)

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

The population proportion have the following distribution  

p \sim N(p,\sqrt{\frac{p(1-p)}{n}})  

The confidence interval would be given by this formula  

\hat p \pm z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}  

For the 95% confidence interval the value of \alpha=1-0.95=0.05 and \alpha/2=0.025, with that value we can find the quantile required for the interval in the normal standard distribution.  

z_{\alpha/2}=1.96  

Use the confidence interval to find the point estimate and margin of error for the proportion

The margin of error is given by :

Me=z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}

And for our case we can find the width of the confidence interval like this:

Width =0.766-0.688=0.078

And the estimation for the margin of error would be given by:

ME= \frac{Width}{2}=\frac{0.078}{2}=0.039

Now we can find th point of estimate adding the margin of error to the lower limit of the interval or subtracting the margin of error to the upper limit, like this:

\hat p =0.688+0.039=0.727

\hat p =0.766-0.039=0.727

4 0
3 years ago
What do diffraction and refraction have
nignag [31]

Answer:

They are both due to the wave nature of light.

4 0
3 years ago
What is the following product?
jenyasd209 [6]

Answer:

10\sqrt{3}

Step-by-step explanation:

\sqrt{30} .\sqrt{10} \\= \sqrt{300} \\=\sqrt{100*3} \\= 10 \sqrt{3}

6 0
3 years ago
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