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Minchanka [31]
2 years ago
15

Harmon’s Jewelry Store receives a shipment of jewelry. 485 pieces are good but 15 pieces arrived damaged. At this rate, if Mrs.

Harmon places an order of 5,500 jewelry pieces, how many can she expect to be damaged?
I need the answer fast please for a test!!!!
Mathematics
1 answer:
Alex2 years ago
6 0

Answer:165 pieces are damaged.

Step-by-step explanation:

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Step-by-step explanation:

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8 0
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​It's believed that as many as 23​% of adults over 50 never graduated from high school. We wish to see if this percentage is the
laila [671]

Answer: 756

Step-by-step explanation:

Given : The proportion of adults over 50 never graduated from high school.  = 0.23

Margin of error : E=0.03

Significance level : \alpha=1-0.95=0.05

Critical value : z_{\alpha/2}=1.96

The formula to find the sample size is given by:_

n=p(1-p)(\dfrac{z_{\alpha/2}\ }{E})^2

i.e. n=(0.23)(0.77)(\dfrac{(1.96)}{0.03})^2=755.941511111approx756

Hence, the required minimum sample size = 756

4 0
3 years ago
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Anon25 [30]

Answer:

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Read 2 more answers
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