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BabaBlast [244]
2 years ago
9

Twenty-five percent of the customers entering a grocery store between 5 P.M. and 7 P.M. use an express checkout. Consider five r

andomly selected customers, and let x denote the number among the five who use the express checkout. (a) What is p(4), that is, P(x = 4)? (Round the answer to five decimal places.) p(4) = .15 Incorrect: Your answer is incorrect.
Mathematics
1 answer:
Sergeeva-Olga [200]2 years ago
6 0

Answer:

Step-by-step explanation:

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The probability that a randomly selected elementary or secondary school teacher from a city is a female is , holds a second job
julsineya [31]

Answer:

The probability that an elementary or secondary school teacher selected at random from this city is a female or holds a second job is 0.90.

Step-by-step explanation:

Denote the events as follows:

<em>X</em> = an elementary or secondary school teacher from a city is a female

<em>Y</em> = an elementary or secondary school teacher holds a second job

The information provided is:

P (X) = 0.66

P (Y) = 0.46

P (X ∩ Y) = 0.22

The addition rule of probability is:

P(A\cup B)=P(A)+P(B)-P(A\cap B)

Use this formula to compute the probability that an elementary or secondary school teacher selected at random from this city is a female or holds a second job as follows:

P(X\cup Y)=P(X)+P(Y)-P(X\cap Y)\\=0.46+0.66-0.22\\=0.90

Thus, the probability that an elementary or secondary school teacher selected at random from this city is a female or holds a second job is 0.90.

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Бn9 x 000 |<br> 1000x372
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Answer:

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Step-by-step explanation:

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Carson buys 4 pounds of peaches for $12. How much did he spend per pound?
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Step-by-step explanation:

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