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3 years ago

V 153

Mathematics

1 answer:

zubka84 [21]3 years ago

6 0

Answer:

p98aewAh,j.k/9dshkc;ude

Step-by-step explanation:

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Ten college students were randomly selected. Their grade point averages (GPAs) when they entered the program were between 3.5 a

solong [7]

Answer:

The 95% confidence interval for the true slope is (0.03985, 0.14206).

Step-by-step explanation:

For the regression equation:

$\hat y=\alpha +\hat \beta x$

The (1 - α)% confidence interval for the regression coefficient or slope $(\hat \beta )$ is:

$Ci=\hat \beta \pm t_{\alpha/2, (n-2)}\times SE(\hat \beta )$

The regression equation for current GPA (Y) of students based on their GPA's when entering the program (X) is:

$\hat Y=3.584756+0.090953 X$

The summary of the regression analysis is:

Predictor Coefficient SE t-stat p-value

Constant 3.584756 0.078183 45.85075 5.66 x 10⁻¹¹

Entering GPA 0.090953 0.022162 4.103932 0.003419

The regression coefficient and standard error are:

$\hat \beta = 0.090953\\SE (\hat \beta)=0.022162$

The critical value of t for 95% confidence level and 8 degrees of freedom is:

$t_{\alpha/2, n-2}=t_{0.05/2, 10-2}=t_{0.025, 8}=2.306$

Compute the 95% confidence interval for $(\hat \beta )$ as follows:

$CI=\hat \beta \pm t_{\alpha/2, (n-2)}\times SE(\hat \beta )\\=0.090953\pm 2.306\times 0.022162\\=0.090953\pm 0.051105572\\=(0.039847428, 0.142058572)\\\approx (0.03985, 0.14206)$

Thus, the 95% confidence interval for the true slope is (0.03985, 0.14206).

6 0

2 years ago

Candice bought 4 boxes of cereal. If each box costs $3.75 and c represents how much she spent in all, which equation represents

jekas [21]

Answer:

c=4×$3.75

Step-by-step explanation:

It would be the problem above because c is the total which equals the total of 4×$3.75.

5 0

3 years ago

Read 2 more answers

Which expression is equivalent to 5(x + 7)?

larisa86 [58]

You need to multiply both numbers inside the parentheses by 5:

5 times x = 5x
5 times 7 = 35

So your answer is B. 5x + 35

5 0

3 years ago

Read 2 more answers

Thank you to whoever helps!

shepuryov [24]

Answer:

M
90°

Step-by-step explanation:

The segment joining an original point with its rotated image forms a chord of the circle of rotation containing those two points. The center of the circle is the center of rotation.

This means you can find the center of rotation by considering the perpendicular bisectors of the segments joining points with their images. Here, the only proposed center that is anywhere near the perpendicular bisector of DE is point M.

Segment AD is perpendicular to corresponding segment FE, so the angle of rotation is 90°. (We don't know which way (CW or CCW) unless we make an assumption about which is the original figure.)

4 0

3 years ago

What is 5 less than product of 6 and s? A.6s-5 B.5-6s C.5+6-s D.6-s-5

JulijaS [17]

5-6s
$5 - 6s$

8 0

3 years ago