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tresset_1 [31]
3 years ago
14

Write an equation of the line with a slope of 3 and a y-intercept of 4.5.

Mathematics
1 answer:
topjm [15]3 years ago
7 0

Answer:y= 3x + 4.5

Step-by-step explanation:

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The n candidates for a job have been ranked 1, 2, 3,…, n. Let X 5 the rank of a randomly selected candidate, so that X has pmf p
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Answer:

A. E(x) = 1/n×n(n+1)/2

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Step-by-step explanation:

The n candidates for a job have been ranked 1,2,3....n. Let x be the rank of a randomly selected candidate. Therefore, the PMF of X is given as

P(x) = {1/n, x = 1,2...n}

Therefore,

Expectation of X

E(x) = summation {xP(×)}

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Value of E(x²)

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3 0
3 years ago
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6 0
2 years ago
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Step-by-step explanation:

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