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borishaifa [10]
3 years ago
14

A shipment of 40 fancy calculators contains 3 defective units. What is the probability if a college bookstore buys 20 calculator

s out of this shipment and 1 is defective.
Mathematics
1 answer:
JulsSmile [24]3 years ago
4 0

Answer:

38.46%

Step-by-step explanation:

There are no names or marking that can make the calculator look different, so the order is not important. Then we should use a combination to solve this problem.

There are 40 calculators in one shipment, 37 of them good items and 3 of them are defect items. We need to choose 19 good calculators and 1 defect calculator. The number of ways to do that will be:

\frac{37}{19}* \frac{3}{1}= 37!\frac{37!}{19!(37-19!)} * \frac{3!}{1!(3-1)!}= 53017895700

The number of possible ways to choose 20 calculators out of 40 calculators will be:

\frac{40}{20}= \frac{40!}{20!(40-20!)}=137846528820

The chance will be: 53017895700/ 137846528820 = 0.3846= 38.46%

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The correct answer for the question that is being presented above is this one: "Correlation must be between 0 and 1; A correlation of r = .01 means there is no significant correlation; Correlation must be between -1 and 1; <span>Correlation is a numeric measure of the strength and the direction between two categorical variables."</span>
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Answer:

The probability is 16%.

Step-by-step explanation:

Start by finding the multiples of 6 that are under 50.

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Answer:

[see below]

Step-by-step explanation:

A functions input is assigned to exactly one output. This means that the inputs must not repeat.

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<em>Solution,</em>

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01:49:1
Keith_Richards [23]

Answer:

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