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svetoff [14.1K]
3 years ago
13

After scoring a touchdown, a football team may elect to attempt a two-point conversion, by running or passing the ball into the

end zone. If successful, the team scores two points. For a certain football team, the probability that this play is successful is 0.40.
1. Let X = 1 if successful, X = 0 if not. Find the mean and variance of X.
Mathematics
1 answer:
snow_tiger [21]3 years ago
8 0

Answer:

a) Mean(x) = 0.40

b) Variance(x) = 0.24

Step-by-step explanation:

From the information given, the process is Bernoulli process, since the team can run or pass the ball into the end zone to score two points only. We are not told the number of times. Thus, <em>n </em>is unknown. That is, we are not told how many times the team successfully pass the ball into the end zone.

By Bernoulli process, the mean and variance are given as follow:

Mean = p

Variance = pq. This is the same as p(1-p)

Where p is the probability that this play is successful and q is  the probability that this play is not successful.

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150 of anything is  75%  of  200  of the same thing.
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Answer:

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General Formulas and Concepts:

<u>Pre-Algebra</u>

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<u>Algebra I</u>

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Step-by-step explanation:

<u>Step 1: Define</u>

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Point (6, 4)

<u>Step 2: Find slope </u><em><u>m</u></em>

  1. Substitute:                     m=\frac{4-9}{6-9}
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Find the coordinates of the vertices of the triangle after a 270° rotation
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Step-by-step explanation:

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Jim wants to put a wallpaper border around a rectangular room. The
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Step-by-step explanation:

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Numărul cu 289 mai mic decât 812
blondinia [14]

Answer:

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Step-by-step explanation:

<u><em>The question is English is</em></u>

Number 289 less than 812

Let

x ----> the number

To find out the number subtract 289 from 812

so

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