2 years ago

Describe the graph of the function:

1 answer:

5 0

The y intercept occurs when x = 0. Therefore it is -180.
The x-intercepts are the roots of the equation.
x1 = 9
x2 = 4
x3 = 5
The shape of the graph would look approximately like the attached graphic.

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dimulka [17.4K]

Answer:

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Step-by-step explanation:

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3 years ago

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The number of accidents per week at a hazardous intersection varies with mean 2.2 and standard deviation of 1.4. The distributio

posledela

Answer:

Approximate probability that $\overline{X}$ is less than 2 = 0.1515

Step-by-step explanation:

Given -

Mean $(\nu )$ = 2.2

Standard deviation $(\sigma )$ = 1.4

Sample size ( n ) = 52

Let $\overline{X}$ be the mean of accidents per week at the intersection during one year (52 weeks) .

probability that $\overline{X}$ is less than 2 =

$P(\overline{X}< 2)$ = $P(\frac{\overline{X} - \nu }{\frac{\sigma }{\sqrt{n}}}< \frac{2 - 2.2 }{\frac{1.4}{\sqrt{52}}})$ Putting $(Z =\frac{\overline{X} - \nu }{\frac{\sigma }{\sqrt{n}}})$