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MariettaO [177]
3 years ago
12

(913 – 892 + 3) - (413 + 9x + 8) Simplify the expression

Mathematics
2 answers:
victus00 [196]3 years ago
5 0
(28+3)-(421+9x)
31-421+9x
-390+9x
Natasha_Volkova [10]3 years ago
3 0

Answer:

-397 -9x

Step-by-step explanation:

(913-892 +3)

(21+3) - (421+9x)

(24) -421 -9x

-397 -9x

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(problem 6.13 page 97) Consider a population in which 80% of males and 60% of females are employed. In this population, 55% of i
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There is a 50.77% probability that no more than one of those chosen is not employed.

Step-by-step explanation:

For each person, there are only two possible outcomes. Either they will be employed, or they will not. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

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In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

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55% of the individuals are female.

So 45% of the individuals are male.

80% of males are employed. So 20% of males are unemployed.

60% of females are employed. So 40% of females are unemployed.

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P(X \leq 1) = P(X = 0) + P(X = 1) = 0.1564 + 0.3513 = 0.5077

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