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Setler79 [48]
4 years ago
9

You have a normal model. The population mean is 500 and standard deviation is 100. Which of the following options would be the c

orrect way to represent the information?a. N(500, 100)b. z(500, 100)c. N(100, 5)d. N(100, 500)
Mathematics
1 answer:
mihalych1998 [28]4 years ago
7 0

Answer:

a. N(500, 100)

Step-by-step explanation:

The normal probability distribution, with mean M and standard deviation S, can be represented in the following notation.

N(M,S).

In this problem, we have that:

Mean = 500

Standard deviation = 100

Which of the following options would be the correct way to represent the information?

a. N(500, 100)

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Answer: Expected number of tests = 5.013

Step-by-step explanation:

Define random variable X that marks the number of tests required for some certain

group. Observe that if the test is negative for all the people (which has probability 0.95), we make one and only one test. If some of the people is tested positive, we make ten additional tests for every person in that group separately. Hence, the expected number of tests will be for if they are all negative (1 test) and the case of at least one person testing positive (11 tests).

That Is,

E(X) = 1(0.95^10) + 11(1 - (0.95^10))

E(X) = 0.5987 + 4.414 = 5.013

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4 years ago
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Draw a line from point Q to point A. Then draw another line segment from point Q to point A'. These lines are marked in red in the attached image (figure 1). Notice we have a 90 degree angle form. To go from A to A', we rotate 90 degrees counterclockwise (green angle in figure 2). Or we can rotate 270 degrees clockwise (gray angle in figure 2).


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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Step-by-step explanation:

Let's solve for a.

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