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kondor19780726 [428]
2 years ago
11

What is the probability of drawing yellow marble followed by a red marble from a bag containing 12 yellow marbles, 14 red marble

s, and 15 green marbles if the first marble is not replaced?
Mathematics
2 answers:
Zina [86]2 years ago
8 0

The total number of marbles are = 12+14+15 = 41

P(drawing yellow) = 12/41 =0.29
P(drawing red) = 12/40 =0.3

Total probability = (12/41) *(14/40) =0.087 
Anna11 [10]2 years ago
3 0
Is yellow so their are 13 yellow marbles.
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2 years ago
The table displays the number of students in each grade at Richmond High School who will or will not be attending the amusement
Pani-rosa [81]

Answer:

P( eleventh\: \: |\: \: FT)=  0.2453 \\\\P( eleventh\: \: |\: \: FT)=  24.53\% \\\\

Step-by-step explanation:

We are given a joint probability table.

There are four different graders in a school

1. Grade Ninth

2. Grade Tenth

3. Grade Eleventh

4. Grade Twelfth

Field trip refers to the students who will attending the amusement park field trip.

No field trip refers to the students who will not be attending the amusement park field trip.

We want to find out the probability that the selected student is an eleventh grader given that the student is going on a field trip.

P( eleventh\: \: |\: \: FT)= \frac{P( eleventh\: \: and \: \: FT)}{P(FT)}

Where P(eleventh and FT) is the probability of students who are in eleventh grade and will be going to field trip

P(eleventh\:  and \: FT) = \frac{13}{92}  \\\\P(eleventh \:  and \: FT) = 0.1413

Where P(FT) is the probability of students who will be going to field trip

P(FT) = \frac{12}{92} + \frac{9}{92} + \frac{13}{92} + \frac{19}{92}\\\\P(FT) = 0.1304 + 0.0978 + 0.1413 + 0.2065\\\\P(FT) = 0.576 \\\\

So the required probability is

P( eleventh\: \: |\: \: FT)= \frac{P( eleventh\: \: and \: \: FT)}{P(FT)} \\\\P( eleventh\: \: |\: \: FT)= \frac{0.1413}{0.576} \\\\P( eleventh\: \: |\: \: FT)=  0.2453 \\\\P( eleventh\: \: |\: \: FT)=  24.53\% \\\\

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3 years ago
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eduard

Answer:

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Step-by-step explanation:

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3 years ago
The Cooking Club made some pies to sell during lunch to raise money for an end-of-year banquet. The cafeteria contributed three
Alex73 [517]
7x13=91 meaning 13 pies were made in total. Since the cafeteria contributed 3 we can subtract 3 from 13. Ultimately meaning that the club contributed 10 pies.

The answer is 10.
3 0
3 years ago
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