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3 years ago

Hey! please help i’ll give brainliest!

Mathematics

2 answers:

MakcuM [25]3 years ago

5 0

Answer:

Hello! Your answer is, A) The arrow pointing to the right

Step-by-step explanation:

Hope I helped! Ask me anything if you have any questions! Brainiest plz! Hope you make an 100% and have a wonderful day! -Amelia♥

Alexandra [31]3 years ago

3 0

Answer:

Step-by-step explanation:

The answer is a

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Step-by-step explanation:

Pythagorean theorem,

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3 years ago

Suppose that the scores on a reading ability test are normally distributed with a mean of and a standard deviation of . What pro

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Answer:

The proportion of individuals score at most 74 points on this test is 70%.

Step-by-step explanation:

The complete question is:

Suppose that the scores on a reading ability test are normally distributed with a mean of 70 and a standard deviation of 8. What proportion of individuals score at most 74 points on this test? Round your answer to at least four decimal places.

Solution:

Let <em>X</em> represent the scores on a reading ability test.

It is provided that $X\sim N(70,8^{2})$ .

Compute the probability that an individuals score is at most 74 points on this test as follows:

$P(X\leq 74)=P(\frac{X-\mu}{\sigma}\leq \frac{74-70}{8})$

$=P(Z$

Thus, the proportion of individuals score at most 74 points on this test is 70%.

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3 years ago