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melisa1 [442]
4 years ago
6

Alex is at the hardware store comparing different types of piping for a repair in his home kitchen. He can choose between copper

piping or plastic piping. He knows that copper piping is stronger but more expensive. He also knows that plastic piping will work for the job that he is doing, and it is less expensive Based on the information presented in this scenario, what can you determine about the copper piping?
a. Copper is a resource that is less scarce then plastic.
b. Copper is more freely available than plastic.
c. Copper is a renewable resource.
d. Copper is a scarce resource, which increases its value.
Business
2 answers:
Sati [7]4 years ago
8 0

Answer:

D. Copper is a scarce resource, which increases its value.

Explanation:

ED2020

SIZIF [17.4K]4 years ago
5 0

Answer:

D. Copper is a scarce resource, which increases its value.

Explanation:

Scarcity determine how much a certain type of resources is available. When the resources become less available, The price of that resources tend to increase.

Since producing copper is way harder than producing plastic, Producer needs a way to accommodate the bigger efforts that they need to make to produce the copper. This justify  why the price of copper is higher.

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Answer:

A

Explanation:

Any pattern particularly with audience involvement

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3 years ago
Stan’s Sporting Goods is a competitor that can manufacture seven soccer balls out of a possible ten, if it makes one soccer net.
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Sabrina’s Soccer has a comparative advantage over Stan’s Sporting Goods because Sabrina’s Soccer has a lower opportunity cost.

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3 years ago
Charlotte has just taken a job at a local publishing house. she has a lot of tasks to accomplish today, but her first task is to
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6 0
3 years ago
The Centers for Disease Control and Prevention (CDC) defines a healthy sleep duration
laiz [17]

a. The point estimate of the married people that sleep well is = 0.6299. The confidence interval for the mean hours of sleep for those that have never been married but report good sleep is 0.6186, 0.6412

b. The point estimate of the number of hours for people that have never been married = 7.2257

95% confidence interval for the mean number of  hours of sleep for those who have never been married = 7.2065, 7.2447

c. the estimated number of sleep for those that have never been married = 7.729 hours

a. The point estimate

P=\frac{Xp}{n}

Xp = successes\\n = sample size\\

Those who have never been married n = 7044

Xp = those who sleep for 7 hours at least

To get Xp, the <u>excel function </u>

Countif(range, criteria)

Countif(A:A, >=7)

This gives Xp = 4437

Point estimate =

\frac{4477}{7044}

= 0.6299

The point estimate of the married people that sleep well is = 0.6299

At 95% interval of confidence,

α = 1-0.95 = 0.05

α/2 = 0.05/2 = 0.025

Z0.025 = 1.96 ( Use the standard probability normal table)

Margin of Error

=M.E = 1.96\sqrt \frac{0.6299(1-0.6299)}{7044} \\\\= 1.96\sqrt{0.000033} \\\\1.96*0.0057

= 0.0113

The 95% confidence interval

= 0.6299 - 0.0113 , 0.6299 + 0.0113

= 0.6186, 0.6412

The confidence interval for the mean hours of sleep for those that have never been married is 0.6186, 0.6412

b. Sample mean

x = ∑x/n

x = number of sleep of the never been married

Mean is calculated using excel function

Average(range)

Average(a:a)

This gives the sample mean = 7.2257

The point estimate of the number of hours for people that have never been married = 7.2257

<u>Standard deviation</u> using excel =

Stdev(A:A) = 0.8211

Margin of error =1.96*\frac{0.8211}{\sqrt{7044} }

= 0.0192

The<u> confidence interval</u> =

= 7.2257-0.0192, 7.2257+0.0192

= 7.2065, 7.2447

95% confidence interval for the mean number of  hours of sleep for those who have never been married = 7.2065, 7.2447

c. From the available data, the mean number of sleep per day that is gotten from the 4437 people that are unmarried and sleep healthily for at least 7 hours = 34295.1

Mean = 34295.1/4437

= 7.729

the estimated number of sleep for those that have never been married = 7.729 hours

Read more on brainly.com/question/15601189?referrer=searchResults

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