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Harlamova29_29 [7]
2 years ago
15

Advertising expenses are a significant component of the cost of goods sold. Listed below is a frequency distribution showing the

advertising expenditures for 63 manufacturing companies located in the Southwest. The mean expense is $50.63 million and the standard deviation is $11.48 million. Is it reasonable to conclude the sample data are from a population that follows a normal probability distribution?
Mathematics
1 answer:
vredina [299]2 years ago
6 0

Answer:hi

Step-by-step explanation:

Hi

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What is <br> <img src="https://tex.z-dn.net/?f=9%28%20%5Cfrac%7B1%7D%7B3%7D%20%29-4%282.6%29%2B2%28-3%29" id="TexFormula1" title
Luda [366]
Hello, that number before the parenthesis means we have to multiply the number outside the parenthesis for the one inside it.

So, the first one 9(1/3) it's easy. We can write 9 as 9/1 to semplify our work.

You have to cross multiply. When cross multiplying, you can simplify numbers. 9 and 3 can be both divided for 3.

You get 3/1 × 1/1 = 3

It equals to 3

Then, 4(2.6) = 4 × 2.6 = 10.4

2(-3) = +2 × (-3) = -6

When you multiply a positive number for a negative one, you'll always get a negative number.

Sum all the results.

3 - 10.4 - 6 = 3 - 10.4 - 6 = - 13,4

Final answer: -13,4
6 0
3 years ago
Read 2 more answers
The equation 2y+x=0 is shown on the graph below as a
Whitepunk [10]

Answer: Red line

Step-by-step explanation:

2y+x=0

2y=-x

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So we need a line with a slope of -1/2 that passes through the origin, which is the red line.

5 0
2 years ago
Which phrase matches the algebraic expression below 3(x+7)+10
Vladimir79 [104]
Which ever expression is 3x + 21 + 10 ..... 21 + 10 = 31 .... So it'll be 3x + 31 .
8 0
3 years ago
Help me pleseeeeeeeee
Licemer1 [7]

Answer: each number represents the sum of the two numbers

Step-by-step explanation:

I’ve never done this question before but bright to sum of the numbers together

6 0
2 years ago
Kelly bought a new car for $20,000. The car depreciates at a rate of 10% per year.
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Answer:

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3 0
3 years ago
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