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3 years ago

There are 252 seats in the planetarium. Some seats are on the first floor and there are 76 seats in the balcony.

Mathematics

2 answers:

Aleks [24]3 years ago

5 0

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Andrei [34K]3 years ago

3 0

A. 176 because if there are 252 total and 76 on the balcony your answer is 252-76.

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Step-by-step explanation:

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3 years ago

7. A clothing trunk is 30 inches tall, 48 inches wide,

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34,560 in^3

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2 years ago

With one method of a procedure called acceptance sampling, a sample of items is randomly selected without replacement and the en

GuDViN [60]

Answer:

$P = 0.1447$

Step-by-step explanation:

Given

$n = 7000$ -- total

$d = 180$ --- defective

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Required

The probability of rejecting the batch

This means that at least one of the selected piece is defected.

So, we first calculate the probability that all the selected piece are accepted.

So, we have:

$Pr = \frac{7000 - 180}{7000} * \frac{6999 - 180}{6999}* \frac{6998 - 180}{6998}* \frac{6997 - 180}{6997}* \frac{6996 - 180}{6996}* \frac{6995 - 180}{6995}$

The denominator decreases by 1 because it is a probability without replacement; 180 is subtracted from the numerator to represent the number of non-defective CDs

So, we have:

$Pr = \frac{6820}{7000} * \frac{6819}{6999}* \frac{6818}{6998}* \frac{6817}{6997}* \frac{6816}{6996}* \frac{6815}{6995}$