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Sati [7]
3 years ago
5

It has been determined with 95% confidence that the proportion of on-line students at SPC who live in Pinellas County is between

0.73 and 0.77. Determine the sample proportion of on-line SPC students who live in Pinellas County.
Mathematics
1 answer:
patriot [66]3 years ago
5 0

Answer:

sample proportion is 0.75

Step-by-step explanation:

given data

confidence = 95%

Pinellas County  between = 0.73 and 0.77

solution

We write confidence interval in terms of p and E as

(p - E ) <  P  <  ( p + E )     ................1

when we compare it 0.73 < p < 0.77

we get        

so here

p - E = 0.73    ................2

and E is 0.02 so

p - 0.02 = 0.73

p = 0.75

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algol [13]
Alright.
So let's say the number of adults is x.
Therefore, the number of boys is 7x + 1.
And then the total amount of girls is 3.5x + 0.5
So then:
x + 7x + 1 + 3.5x + 0.5 = 82
11.5x + 1.5 = 82
11.5x = 80.5
x = 7
So now we can figure out the number of male and female students.
Male students = 7x + 1
7*7 + 1
49 + 1
50
Male Students = 50
Female students = half of 50
50/2 = 25
Female Students = 25
4 0
3 years ago
Please help! double points. thanks
Gala2k [10]

Check the picture below.

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4 0
2 years ago
If W is the center of the circle below and measures 52°, what is the measure of XZY?
Zinaida [17]

Answer:

Option (B)

Step-by-step explanation:

By the theorem of the inscribed angle,

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Since m(arc XY) = 52°

Angle subtended by the the arc at the center (Central angle) = m∠XWY = 52°

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By theorem, m∠XZY = \frac{1}{2}(\angle XWY)

m∠XZY = \frac{1}{2}(52)

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Therefore, Option (B) will be the answer.

3 0
3 years ago
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aniked [119]
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3 years ago
The illustration below shows the graph of y as a function of x.
vivado [14]

Answer:

1. Quadratic function

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3. x-intercepts = 0, 6

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Step-by-step explanation:

2. The line crosses the y-axis at (0,0)

3. The line crosses the x-axis at (0,0) & (6,0)

4. The highest point is at 9 which is above 3; (3, 9)

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I hope this helps!

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