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Ivenika [448]
3 years ago
6

Please help me, I need answers in 2 days. Please give answers in one picture otherwise i cannot view it without paying. Would be

very appreciated. Will give branliest

Mathematics
1 answer:
solniwko [45]3 years ago
6 0

Answer:

Step-by-step explanation:

i hope this is good enough

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An Internet reaction time test asks subjects to click their mouse button as soon as a light flashes on the screen. The light is
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Answer:

(a) 0.20

(b) 31%

(c) 2.52 seconds

Step-by-step explanation:

The random variable <em>Y</em> models the amount of time the subject has to wait for the light to flash.

The density curve represents that of an Uniform distribution with parameters <em>a</em> = 1 and <em>b</em> = 5.

So, Y\sim Unif(1,5)

(a)

The area under the density curve is always 1.

The length is 5 units.

Compute the height as follows:

\text{Area under the density curve}=\text{length}\times \text{height}

                                          1=5\times\text{height}\\\\\text{height}=\frac{1}{5}\\\\\text{height}=0.20

Thus, the height of the density curve is 0.20.

(b)

Compute the value of P (Y > 3.75) as follows:

P(Y>3.75)=\int\limits^{5}_{3.75} {\frac{1}{b-a}} \, dy \\\\=\int\limits^{5}_{3.75} {\frac{1}{5-1}} \, dy\\\\=\frac{1}{4}\times [y]^{5}_{3.75}\\\\=\frac{5-3.75}{4}\\\\=0.3125\\\\\approx 0.31

Thus, the light will flash more than 3.75 seconds after the subject clicks "Start" 31% of the times.

(c)

Compute the 38th percentile as follows:

P(Y

Thus, the 38th percentile is 2.52 seconds.

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Step-by-step explanation:

Hope this helps!!!

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So i think it would be 5/35
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we don't see an image?

Step-by-step explanation:

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What is the first step when solving this equation?
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Answer:

Distribute

When you have an equation like this, distribute first and then add or subtract like terms to solve for x.

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