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Digiron [165]
3 years ago
8

PLEASEEEEE HELP ME

Mathematics
2 answers:
Nadya [2.5K]3 years ago
4 0

c. 44.25 trust me I just took the test.

Drupady [299]3 years ago
4 0

Answer:

The correct option is C.

Step-by-step explanation:

The general form of linear regression equation is

y=a+bx           .... (1)

where,

b=\frac{\sum_{i=1}^nx_iy_i-n\overline{x}\overline{y}}{\sum_{i=1}^nx_i^2-n\overline{x}^2}

a=\overline{y}-b\overline{x}

Using the graphing calculator, we get

a=0.0142857

b=2.01071

Substitute the values of a and b in equation (1).

y=0.0142857+2.01071x

The equation of line of best fit is y=0.0142857+2.01071x, where x is number of years and y is height of trees.

Substitute x=22 to find the height of trees after 22 years.

y=0.0142857+2.01071(22)

y=44.2499057

y=44.25

The height of trees after 22 years is 44.25 ft. Therefore the correct option is C.

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3 0
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Answer:

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Step-by-step explanation:

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At a certain university, 42% of the students are women and 18% of the students are engineering majors. Of the engineers, 22% are
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Answer:

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Step-by-step explanation:

The proportion of students at the university who are women is 0.42.

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The proportion of students at the university who are engineering majors is 0.18.

<em>P (E) = 0.18</em>

The proportion of engineering majors that are women is 0.22.

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The proportion of students at the university that are woman and engineering major is:

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