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3 years ago

Identify a diameter of circle E. A) AC B) HI C) EB D) GF

Mathematics

1 answer:

mash [69]3 years ago

5 0

Answer:

B) HI

Step-by-step explanation:

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A college-entrance exam is designed so that scores are normally distributed with a mean of 500 and a standard deviation of 100.

yawa3891 [41]

Answer:

The probability is 0.003

Step-by-step explanation:

We know that the average $\mu$ is:

$\mu=500$

The standard deviation $\sigma$ is:

$\sigma=100$

The Z-score is:

$Z=\frac{x-\mu}{\sigma}$

We seek to find

$P(x800)$

For P(x>800) The Z-score is:

$Z=\frac{x-\mu}{\sigma}$

$Z=\frac{800-500}{100}$

$Z=3$

The score of Z = 3 means that 800 is 3 standard deviations from the mean. Then by the rule of the 8 parts of the normal curve, the area that satisfies the conficion of 3 deviations from the mean has percentage of 0.15%

$P(x>800)=0.15\%$

For P(x<200) The Z-score is:

$Z=\frac{x-\mu}{\sigma}$

$Z=\frac{200-500}{100}$

$Z=-3$

The score of Z = -3 means that 200 is 3 standard deviations from the mean. Then by the rule of the 8 parts of the normal curve, the area that satisfies the conficion of 3 deviations from the mean has percentage of 0.15%

$P(x$

Therefore

$P(x800)=P(x800)$

$P(x800)=0.0015 + 0.0015$

$P(x800)=0.003$

6 0

3 years ago

2x - 4y = -4 2x + y = 11

marta [7]

Answer:

what do you want to know?

Step-by-step explanation:

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3 years ago

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Le nombre de lettre A représente la moitié du nombre total de lettres

STatiana [176]

Answer: Si COMPREISO

Step-by-step explanation:

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3 years ago

Unexpected expense. In a random sample 765 adults in the United States, 322 say they could not

Helga [31]

Answer:

don't bother commenting im a bot

Step-by-step explanation:

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3 years ago

Write an expression that represents the area of a rectangle with length 6a^2b and width 3ab. (For any rectangle with l and width

kati45 [8]

For this specific problem, the expression that would represent the area of a rectangle with length 6a^2b and width 3ab is .6a2b × 3ab. I am hoping that this answer has satisfied your query about and it will be able to help you.

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4 years ago