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3 years ago

I’m timed !!! Please help

Mathematics

1 answer:

Doss [256]3 years ago

4 0

1,450 because you would plug 75 in for x
f(x)= 20(75)-50

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Help!!!! Somebody help me solve these questions please

kykrilka [37]

Step-by-step explanation:

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3 years ago

Read 2 more answers

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kkurt [141]

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3 years ago

Need help please answer !!!

DerKrebs [107]

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3 years ago

I need help with #6 .

Vitek1552 [10]

Answer:

5.wy

6.?

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Step-by-step explanation:

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2 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

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 X 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%.

4 0

3 years ago