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andreev551 [17]
2 years ago
11

Which of the equations below could be the equation of this parabola? (0, 0) A. x= - 1 / 4y² B. x=-1/4x2 C. x=1/4y2 D. x=1/4x2​

Mathematics
1 answer:
Travka [436]2 years ago
3 0

Answer:

Step-by-step explanation:

A. X=1/4y2

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We need to work out the z-value of each question to work out the probability

Question a)

We have
X = 5 minutes
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We want to find the probability of z < -0.77 so we read the z-table for the value of z on the left of -0.77 we have the probability P(z< -0.77) = 0.2206

The table is attached in picture 1 below

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Question b)

z-score = (10-5) / 2.2 = 2.27

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The table reading is shown in the second picture below

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Question c)

The value of z between 5 minutes and 10 minutes is

P(-0.77<z<2.27) = P(z<2.27) - P(z< -0.77)
P(-0.77<z<2.27) = 0.9884 - 0.2206 = 0.7678 = 76.78%


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