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2 years ago

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Sample of 3 items is selected at random from a box containing 20 items of which 4 aredefective. find the expected number of defe

ctive items in the sample.

1 answer:

azamat2 years ago

6 0

That's 54 I think. 20x3=60-4=54

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As part of a company incentive, each sales person that sells over \$40{,}000$40,000dollar sign, 40, comma, 000 in merchandise th

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Answer:

$58,600

Step-by-step explanation:

Data provided in the question:

Commission on Sales upto and including $40,000 = 5%

Commission on Sales above $40,000 = 10%

Total commission = $3,860

Now,

For sales of $40,000

maximum commission = 5% of $40,000

= $2,000

Since the commission received is greater than $2,000

Therefore,

The value of s is greater than $40,000

Thus

Amount qualifying for 10% commission = s - $40,000

therefore,

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or

$3,860 = $2,000 + 0.10 × (s - $40,000)

or

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or

s - $40,000 = $18,600

or

s = $18,600 + $40,000

or

s = $58,600

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Explain why the vertical line test is used to determine if a graph represents a function.

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Answer:

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Step-by-step explanation:

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This means that at the null hypothesis, we test if the mean is 7, that is:

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$H_1: \mu \neq 7$

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