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Paraphin [41]
3 years ago
13

In a random sample of 63 women at a company, the mean salary is $48,902 with a standard deviation of $5270. in a rando sample of

50 men at the company the mean salary is $53,454 with a standard deviation of $4677. Which interval in the 95% confidence interval for the difference between the mean salaries of all women and men at the company?
A. 3614.81 , 5489.19
B. 2715.11 , 6388.89
C. 4083,40 , 5020.60
D. 2134.05 , 6969.95
Mathematics
1 answer:
sdas [7]3 years ago
4 0
So u would make at least 101,000 per year
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Solve x 2 + 9x + 8 = 0 by completing the square. What are the solutions?
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x^2+9x+8=0

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3 years ago
Which expression is a factor of 21x2 + 13x – 20?A. 3x – 4B. 7x - 5C. 7x + 4D. 3x + 5
LUCKY_DIMON [66]

Answer:

B. 7x - 5

Explanation

Given the expression 21x^2 + 13x – 20, to get which of the given expression is a factor we will have to factorize the equation first as shown;

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1 year ago
Match the proof part 1:​
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A, B, C

Step-by-step explanation:

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A. Given.

This is the information that was given in the problem statement.

Step 2: "ΔABC ≅ ΔDEF"

B. Side-Angle-Side Postulate (SAS)

The SAS postulate says that if two triangles have a pair of congruent angles between two pairs of congruent sides, then the triangles must be congruent.  From the previous step, we can conclude the triangles are congruent.

Step 3: "∠C ≅ ∠F"

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In Step 2, we established the triangles are congruent.  So now we can conclude that the corresponding angles are congruent.

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