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3 years ago

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Helpppp plzzz Maddie is packing for a trip. in her closet,there are 3 red, 4 black, 2 green, and 2 yellow blouses. She randomly

selects 2 blouses. Find each probability. 1. P(black and yellow) 2. P(green and green

2 answers:

nydimaria [60]3 years ago

8 0

1. P(black and yellow)

morpeh [17]3 years ago

3 0

Total number of ways to choose 2 blouses = 11*10= 110

P(black and yellow) = (4C1 * 2C1)/110 = 8/110

P(green and green) = 1/110

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

For this case we know the population deviation given by:

$\sigma = 5.5$

And we have a sample size of n =81. We want to estimate the standard error of the sampling distribution $\bar X$ and for this case we know that the distribution is given by:

$\bar X \sim N(\mu ,\frac{\sigma}{\sqrt{n}})$

And the standard error would be:

$\sigma_{\bar x}= \frac{\sigma}{\sqrt{n}}$

And replacing we got:

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2 years ago