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Vaselesa [24]
3 years ago
8

There are 12 students in a classroom, including the triplets joey, chloe, and zoe. If 3 of the 12 are randomly selcted to give s

peeches, what is the probability that joey with be first, chloe will be second, and zoe will be third?
A: 1/1320 B: 1/4 C: 1/48 D: 1/220
Mathematics
2 answers:
BARSIC [14]3 years ago
8 0
The probability of Joey being first is 1/12. If that happens the probability of Chloe going next is 1/11. Then the probability of zoe being picked next would be 1/10. Then if you multiply all the fractions I gave you you would get 1/1320 which is A. So A. Is your answer!! Hope this helps you out!!
grin007 [14]3 years ago
6 0

Answer:

it is 1/1320

Step-by-step explanation:

cuz it is obviously higher with specific students than with random ones

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Answer:

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Step-by-step explanation:

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2 years ago
Can someone please help me with this problem
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3 years ago
Read 2 more answers
It is assumed that the time customers spend in a record store is uniformly distributed between 3 and 12 minutes. Based on this i
monitta

Answer:

0% probability that a customer will be exactly 7.50 minutes in the record store.

Step-by-step explanation:

Uniform probability distribution:

An uniform distribution has two bounds, a and b.  

The probability of finding a value of at lower than x is:

P(X < x) = \frac{x - a}{b - a}

The probability of finding a value between c and d is:

P(c \leq X \leq d) = \frac{d - c}{b - a}

The probability of finding a value above x is:

P(X > x) = \frac{b - x}{b - a}

The uniform distribution is a continuous distribution, which means that the probability of an exact outcome is zero.

Uniformly distributed between 3 and 12 minutes.

This means that a = 3, b = 12

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Continuous distribution, so:

0% probability that a customer will be exactly 7.50 minutes in the record store.

7 0
3 years ago
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