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kirza4 [7]
2 years ago
9

There were 3 apple, 1 mixed fruit, 2 grape, and 4 tropical fruit juice boxes in the cooler at the picnic. What is the probabilit

y that, when Jill reaches into the cooler to grab two juice boxes without replacing them, she grabs two that are grape?
Mathematics
2 answers:
goldenfox [79]2 years ago
6 0

There are  10  juice boxes in the cooler altogether.
2  of them are grape.

The first time Jill pulls one out with her eyes closed,
the probability that it's a grape is

                                         2 / 10 .

If that try is successful, then there are  9  boxes left in the cooler,
and one of them is grape.

If she already has one grape, and reaches in again with her eyes
closed, the probability of pulling out the second grape is

                                        1 / 9 .

The probability of both events happening in two tries is

                           (2/10) x (1/9) = 2/90 = 1/45  =  (2 and 2/9) percent .

zmey [24]2 years ago
4 0

Answer:

It's 1/100, possibly.

Step-by-step explanation:

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Answer:

a.

\bar X_F=43.7

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c.

Attached file

d.

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Step-by-step explanation:

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c. In the attached file you can see the diagram of points for the times, in the smoking and non-smoking groups.

d. Apparently the practice of smoking reduces the ability to fall asleep, demanding much more time in individuals who smoke, than in those who do not smoke.

Download pdf
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