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OLga [1]
3 years ago
13

HelloHelloHelloHello

SAT
1 answer:
tatiyna3 years ago
8 0
HelloHelloHelloHelloHello!
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Anybody want to be friends ? and what is 2-9x9=?
vekshin1

Answer:

-63

Explanation:

2 - 9 = -7

-7 x 9 = -63

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Please answer see the picture
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A country that is concerned about inflation wants to:.
STatiana [176]

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Prevent its currency from losing value too quickly.

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* 5. True or False: You have to pay to file the FAFSA​
tatyana61 [14]

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False

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FAFSA: Free Application for Federal Student Aid

Hope this helps.

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3 years ago
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the distribution of lengths of salmon from a certain river is approximately normal with standard deviation 3.5 inches. if 10 per
juin [17]

Complete question;

<em>The distribution of lengths of salmon from a certain river is approximately normal with a standard deviation of 3.5 inches. If 10 percent of salmon are longer than 30 inches, which of the following is closest to the mean of the distribution? 26 inches A 28 inches B 30 inches C 33 inches D 34 inches</em>

Option B is correct. The value that is closest to the mean of the distribution is 30inches.

The formula for calculating the z-score is expressed as:

z=\frac{ x-\mu}{\sigma}

Given the following parameters

\sigma = 3.5\\x = 26in

If 10 percent of salmon are longer than 30 inches, then:

  • P(x>30) = 0.1

Using the z table to get the value corresponding to the mean area 0.1.

  • The required z-score will be -1.285

Substitute the resulting parameters into the formula to get the mean of the distribution.

z=\frac{x-\mu}{\sigma}\\-1.285=\frac{26-\mu}{3.5}\\-1.285 \times 3.5 = 26 - \mu\\ -4.4975 = 26 - \mu\\\mu = 26 + 4.4975\\\mu = 30.4975\\\mu \approx 30in

Hence the value that is closest to the mean of the distribution is 30inches.

Learn more here: brainly.com/question/15295437

3 0
2 years ago
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