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2 years ago

What is the answer to 58Q+6Q*8Q

Mathematics

1 answer:

Blababa [14]2 years ago

8 0

Use p.e.m.d.a.s.
first multiply 6Q and 8Q = 48Q
then subtract 58Q and 48Q = 10Q

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Answer:

a) 0.9

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Step-by-step explanation:

We are given the following in the question:

A marketing firm is considering making up to three new hires.

Let X be the variable describing the number of hiring in the company.

Thus, x can take values 0,1 ,2 and 3.

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b) expected value and the standard deviation of the number of hires.

$E(X) = \displaystyle\sum x_iP(x_i)\\=0(0.1) + 1(0.4) + 2(0.32)+3(0.18) = 1.58$

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