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2 years ago

What’s X=? Round to the Nearest Hundredth

Mathematics

1 answer:

AlladinOne [14]2 years ago

8 0

9514 1404 393

Answer:

9.83

Step-by-step explanation:

The mnemonic SOH CAH TOA is intended to remind you of the relationship ...

Sin = Opposite/Hypotenuse

sin(24°) = 4/x

x = 4/sin(24°)

x ≈ 9.83

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3 years ago

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

Gnoma [55]

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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