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Andrews [41]
3 years ago
8

A binomial discrete random variable, X has a mean

Mathematics
1 answer:
kompoz [17]3 years ago
5 0

Since <em>X</em> follows a binomial distribution, its mean and variance are

<em>np</em> = 3

<em>np</em> (1 - <em>p</em>) = 2

Substitute <em>np</em> = 3 in to the second equation to solve for <em>p</em> :

3 (1 - <em>p</em>) = 2

1 - <em>p</em> = 2/3

<em>p</em> = 1/3

Solve for <em>n</em> :

<em>n</em> (1/3) = 3

<em>n</em> = 9

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Answer:

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Step-by-step explanation:

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3 years ago
You have a bowl with 5 orange, 6 blue, 3 green, 4 red and 7 yellow candies. What is the probability that you will
shutvik [7]

Answer:

с ) 20%

Step-by-step explanation:

There are 5 orange candies, and 25 total candies to choose from. If you only want to pick the orange candies, then the probability would be 5/25, or 1/5.

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3 years ago
The sheet of metal has dimensions 56 cm by 33 cm. It sis melted down
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Answer:

12

Step-by-step explanation:

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3 0
3 years ago
I need to solve for x
Andrei [34K]

Answer:

x = 10

Step-by-step explanation:

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88° + 5x + 1  = 14x - 1

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A car is 160 inches long.
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