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2 years ago

13

At a high school football game Jamie buys 6 hot dogs and 4 soft drinks for $13. Amy buys 3 hot dogs and 4 soft drinks for $8.50.

What is the price of a hot dog?

1 answer:

Jet001 [13]2 years ago

7 0

The price of the hot dogs is $1.50 and $1 for soft drinks.

$9(6 hot dogs)+$4(4 soft drinks)=$13

$4.50(3 hot dogs)+$4(4 soft drinks)=$8.50

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2 years ago

California's highest point, Mt. Whitney, stands 14,505 ft. above sea level. California's lowest point, Death Valley, is 282 ft.

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2 years ago

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3 years ago

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Answer and Explanation:

Given : Five males with an X-linked genetic disorder have one child each. The random variable x is the number of children among the five who inherit the X-linked genetic disorder.

To find :

a. Does the table show a probability distribution?

b. Find the mean and standard deviation of the random variable x.

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$\sum P(X)=1$

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x P(x) xP(x) x² x²P(x)

0 0.029 0 0 0

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2 0.324 0.648 4 1.296

3 0.324 0.972 9 2.916

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The mean of the random variable is

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The standard deviation of the random sample is

$Variance=\sigma^2$

$\sigma^2=\sum x^2P(x)-\mu^2$

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Therefore, The mean is 2.5 and the standard deviation is 1.08.

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2 years ago