2 years ago

Can somebody help me I’m stuck with this!!

Mathematics

1 answer:

Mama L [17]2 years ago

3 0

I believe it’s A, C, and E

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The area of a rectangle is (4x2 − 49y2) square units. Determine the dimensions of the rectangle by factoring the area expression

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Answer:

Step-by-step explanation:

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2 years ago

The regression line for the given data is = 5.044x + 56.11. determine the residual of a data point for which x = 2 and y = 66.

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Do you have answer choices ?

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Empirical rule (statistics)Help please!!!

emmasim [6.3K]

The empirical rule you're referring to is the 68-95-99.7 rule, which asserts that for a normal (bell-shaped) distribution, approximately 68% of the distribution lies within 1 standard deviation of the mean; 95% lies within 2 standard deviations of the mean; and 99.7% lies within 3 standard deviations of the mean.

Let $X$ be the random variable denoting vehicle speeds along this highway. We want to find $P(61$ . To use the rule, we need to rephrase this probability in terms of the mean and standard deviation.

Notice that $61=70-9=70-3\cdot3$ , and $79=70+9=70+3\cdot3$ . In other words, 61 and 79 both lie exactly 3 standard deviations away from the mean, so $P(61$ .