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fredd [130]
3 years ago
5

The per capita consumption of red meat by people in a country in a recent year was normally​ distributed, with a mean of 107107

pounds and a standard deviation of 39.339.3 pounds. Random samples of size 1818 are drawn from this population and the mean of each sample is determined.
Mathematics
1 answer:
Pachacha [2.7K]3 years ago
6 0

Answer:

mean sample is 9.26

Step-by-step explanation:

Given data

mean = 107 pounds

standard deviation = 39.3 pounds

no of sample (n) = 18

to find out

sample means

solution

according to question we know mean of sample = 107 pounds

so standard error of this sample will be standard deviation / \sqrt{n}

now put all value n and standard deviation and we get sample mean i.e.

mean sample = standard deviation / \sqrt{n}

mean sample =  39.3 / \sqrt{18}

mean sample = 9.26

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2 – 2y = 16
nekit [7.7K]

Answer:

Y = -7 and the equation would be 2 - (2 x -7) = 16

Step-by-step explanan

3 0
3 years ago
Find the MEDIAN of the data set. (Hint: the numbers must be in order first!) 40 76 40 63 47 57 49 55 50 53
Romashka [77]

Given:

The data set is:

40, 76, 40, 63, 47, 57, 49, 55, 50, 53

To find:

The median of the given data set.

Solution:

We have,

40, 76, 40, 63, 47, 57, 49, 55, 50, 53

Arrange the data values in ascending order.

40, 40, 47, 49, 50, 53, 55, 57, 63, 76

Here, the number of observations is 10 which is an even number. So, the median is:

Median=\dfrac{(\dfrac{n}{2})\text{th term}+(\dfrac{n}{2}+1)\text{th term}}{2}

Putting n=10, we get

Median=\dfrac{(\dfrac{10}{2})\text{th term}+(\dfrac{10}{2}+1)\text{th term}}{2}

Median=\dfrac{5\text{th term}+6\text{th term}}{2}

From the arranged terms, it is clear that the the 5th term is 50 and the 6th term is 53.

Median=\dfrac{50+53}{2}

Median=\dfrac{103}{2}

Median=51.5

Therefore, the median of the given data set is 51.5.

4 0
3 years ago
Is the expression 5(3m+2p)-4m equivalent to the expression 13p+11m-3p?<br>Explain your answer.
Damm [24]
First I'll simplify the first one by distributing
11m + 10p
And the second
10p + 11m
Yep they're equal
5 0
3 years ago
Read 2 more answers
Rita needs to replace the ink cartridge for her printer. She found four brands that make replacement cartridges. The table below
Rasek [7]

The brand of cartridge which is the best buy us the brand with the lowest unit price which is brand A.

<h3>Unit price</h3>

Brand A

Cost = $20

pages = 200

Unit price = $20/200

= $0.1 per page

Brand B:

Cost = $25

Pages = 125

Unit price = $25/125

= $0.2 per page

Brand C:

Cost = $30

Pages = 150

Unit price = $30 / 150

= $0.2 per page

Brand D:

Cost = $35

Pages = 250

Unit price = $35 / 250

= $0.14 per page

Therefore, the brand of cartridge which is the best buy us the brand with the lowest unit price which is brand A.

Learn more about unit price:

brainly.com/question/14286952

#SPJ1

4 0
1 year ago
I don’t know how to do that
Alisiya [41]

Answer:

16

Step-by-step explanation:

Divide 64 by 8 to get 8. this is 1/8 of the books.

3/8 were non fiction, or 24

1/4 (2/8) were picture books, or 16

5/8 were non fiction or picture books, so ’the rest‘ of the chapter books is 3/8.

3/8 were chapter books, or 24.

add the amount of picture books and chapter books since they are the fictional texts.

16+24=40

subtract the amount of non fictional books from the amount of fictional books to get the sum.

40-24=16

8 0
3 years ago
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