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Veronika [31]
3 years ago
12

One of the questions in the pew internet & american life project asked adults if they used the internet at least occasionall

y (pew website, october 23, 2012). the results showed that 454 out of 478 adults aged 18 - 29 answered yes; 741 out of 833 adults aged 30 – 49 answered yes; 1058 out of 1644 adults aged 50 and over answered yes. use z-table. round your answers to four decimal places.
a. develop a point estimate of the proportion of adults aged 18 – 29 who use the internet.
Mathematics
1 answer:
solong [7]3 years ago
5 0
Given that <span>454 out of 478 adults aged 18 - 29 answered yes, the </span><span>point estimate of the proportion of adults aged 18 – 29 who use the internet</span>  is given by

\hat{p}= \frac{454}{478} =0.9498
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A solar collector is 2,0 m long by 1,5 m wide. It is held in place
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Answer:

The width of the frame is 0.0746 meters

Step-by-step explanation:

We are told that after the frame has been attached to the solar collector, the area that is left exposed is 2.5m^2  . As we see in the figure, the dimensions of this area are

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Now since w=1.5m and l=2m we have:

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we expand this and solve for x using the quadratic formula:

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we get two solutions:

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7 0
3 years ago
Estimate the perimeter of the figure to the nearest tenth.
Vlad [161]

Answer:

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Step-by-step explanation:

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AT=a+b+c

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Perimeter on Figure 2:

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3 0
3 years ago
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valkas [14]

Answer:

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Step-by-step explanation:

Assuming the each number is equally likely

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