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timofeeve [1]
3 years ago
11

A survey of 100,000 adults found that 5% of Americans walk to work. Which of the following could be used to simulate the results

of this survey and develop a margin of error?
A. Take a spinner that has 20 sections and mark one section. Spin the spinner 100,000 times. Record the portion that lands on the marked section. Do this 100 times. The margin of error will be half the distance of the centermost 95% of proportions.
B. Flip a coin and record the responses. Do this 100 times. The margin of error will be half the distance of the centermost 95% of proportions.
C. Ask 20 random people if they walk to work and record responses. Do this 100,000 times.
Mathematics
1 answer:
aalyn [17]3 years ago
3 0

Answer:

A I think im fairly certain

Step-by-step explanation:

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21/506

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\frac{9}{24} x\frac{8}{23}x \frac{7}{22} then you can simplify which gets you 21/506. Hope this helps :)

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Find the length of the hypotenuse of the right triangle.
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Let f(x)=8x+8 find and simply f(x+1)
shusha [124]

Answer:

Step-by-step explanation:

f(x) = 8x + 8

f(x+1) = 8(x+1) + 8

= 8x + 8 + 8

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It is given that 2(3+x)=6+2x. this is an example of the ____ property.
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6 0
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An arena receives $1,700 per event for 12 concerts. If the costs for this sponsorship total $14,000, what is the profit margin f
miss Akunina [59]

Answer:

total profit margin for all 12 concert is $6,400.

profit margin for all one concert is  $533.33

Step-by-step explanation:

Amount of money received for one event = $1700

Total no of concert = 12

Total money received for 12 event = Amount of money received for one event * Total no of concert

Total money received for 12 event  = $1700 *12 = $20,400

Total cost of sponsorship = $14,000

Profit margin is the difference money invested and money earned.

here total investment is $14,000

Total money earned is  $20,400

Therefore profit margin = money earned - total investment

= $20,400 -  $14,000 = $6,400

Therefore total profit margin for all 12 concert is $6,400.

However to calculate profit margin for one concert we can simply divide the total profit margin for all 12 concert by no of concert (i.e 12)

profit margin for one concert = total profit margin for all 12 concert/total no of concert  = $6,400/12 = $533.33

profit margin for all one concert is  $533.33

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3 years ago
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