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3 years ago

8

. Bella makes $7.50 an hour working at her job at the movie theater. If she worked 12 hours last week and 15.5 hours the week be

fore, how much did she make total for the two weeks? (3pts – 1pt each for setting up equation, correct answer, correct label)

1 answer:

SIZIF [17.4K]3 years ago

5 0

She made 206.25$
(7.50x12)+(7.50x15.5)= 206.25

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Answer:

a) The probability that at least 5 ties are too tight is P=0.0432.

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Step-by-step explanation:

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a) We can express the probability that at least 5 ties are too tight as:

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The probability that at least 5 ties are too tight is P=0.0432.

a) We can express the probability that at most 12 ties are too tight as:

$P(x\leq 12)=\sum\limits^{12}_{k=0} {\frac{n!}{k!(n-k)!} p^k(1-p)^{n-k}}\\\\P(x\leq 12)=0.1216+0.2702+0.2852+0.1901+0.0898+0.0319+0.0089+0.0020+0.0004+0.0001+0.0000+0.0000+0.0000\\\\P(x\leq 12)=1$

The probability that at most 12 ties are too tight is P=1.

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3 years ago