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ra1l [238]
3 years ago
7

The difference of the sample means of two populations is 34.6, and the standard deviation of the difference of the sample means

is 11.9. The 95% confidence interval lies between A) -11.9 B) -23.8 C) -35.7 D) -45.4 and A) 11.9 B) 23.8 C) 35.7 D) 45.4
Mathematics
1 answer:
mojhsa [17]3 years ago
8 0

Answer

23.8,23.8

Step-by-step explanation:

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Answer:

The answer will be 12 please mark me as brainliest

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Can someone match all of these definitions to all five words for me? I’m very confused but I’ll mark brainlist if you do at leas
forsale [732]

Solution: Any value for a variable that makes the equation true.

Reciprocal: Focuses on the use of multiplication and division

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The runner ran 5/6 then he ran 9/10 more how much did he run in all
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Find the solution to the system of equations. 4x + 3y = –1 3x – 9y = 33
alexandr1967 [171]

Answer:

Step-by-step explanation:

4x + 3y = -1         --------------(i)

3x - 9y = 33        -------------(ii)

multiply equation (i) by 3

(i)* 3     12x + 9y = -3

(ii)       <u>   3x - 9y = 33</u>

add,       15x = 30

                 x = 30/15

                 x = 2

Put x =2 in Equation (i)

4*2 + 3y = -1

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     3y = -1-8

     3y = -9

       y = -9/3

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