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3 years ago

13

How do you add and subtract integers?

1 answer:

AleksAgata [21]3 years ago

5 0

Answer: To add integers having the same sign, keep the same sign and add the absolute value of each number. To add integers with different signs, keep the sign of the number with the largest absolute value and subtract the smallest absolute value from the largest. Subtract an integer by adding its opposite.

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Angelina_Jolie [31]

Problem 44

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mixas84 [53]

Answer:

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And we can use the probability mass function and we got:

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And replacing we got:

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Step-by-step explanation:

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The probability mass function for the Binomial distribution is given as:

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Where (nCx) means combinatory and it's given by this formula:

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And we can use the complement rule and we got:

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And we can use the probability mass function and we got:

$P(X=0)=(4C0)(0.72)^0 (1-0.72)^{4-0}=0.00615$

And replacing we got:

$P(X \geq 1) = 1-0.00615 = 0.99385$

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