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Concept explainers
For the data sets in Exercises 19–26,
(a) Draw a
(b) Find the value for r.
(c) Test the significance of r at the 5% level and at the 1% level.
(d) Find the equation of the regression line and draw the line on the scatter plot, but only if r is significant.
(e) Describe the nature of the relationship if one exists.
(f) Make the requested prediction using your regression line if possible.
23. A statistics instructor plans to sec if there’s a relationship between the final exam score in Statistics 102 and the final exam scores of the same students who took Statistics 101.
Stat 101, x | 87 | 92 | 68 | 72 | 95 | 78 | 83 | 98 |
Stat 102, y | 83 | 88 | 70 | 74 | 90 | 74 | 83 | 99 |
Predict the slat 102 score for a student who got 90 on the stat 101 final.
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Chapter 11 Solutions
Quantitative Literacy (Loose Leaf) with Connect Math Hosted by ALEKS Access Card
- Not use ai pleasearrow_forwardSolve the equation. Write the smaller answer first. 2 (x-6)² = 36 x = Α x = Previous Page Next Pagearrow_forwardWrite a quadratic equation in factored form that has solutions of x = 2 and x = = -3/5 ○ a) (x-2)(5x + 3) = 0 ○ b) (x + 2)(3x-5) = 0 O c) (x + 2)(5x -3) = 0 ○ d) (x-2)(3x + 5) = 0arrow_forward
- A vacant lot is being converted into a community garden. The garden and a walkway around its perimeter have an area of 690 square feet. Find the width of the walkway (x) if the garden measures 14 feet wide by 18 feet long. Write answer to 2 decimal places. (Write the number without units). Hint: add 2x to each of the garden dimensions of 14 x 18 feet to get the total area for the length multiplied by width.arrow_forwardSolve x-1 x+2 = 12 3 4 Your Answer: Answerarrow_forwardFind the solutions to the following equation 21x²+5x=6 ○ a) -3/7, 3/2 ☐ b) -2/3, 3/7 ○ c) -7/3, 3/2 ○ d) -2/3, 7/3arrow_forward
- Listen Solve the quadratic equation. Write the one solution, do not write x =. 2 x²+6x+9= 0 বarrow_forwardSolve the rational equation 14 1 + x-6 x x-7 x-7 ○ a) x = 1, x = 8 ○ b) x = 1 ○ c) x = 7 ○ d) x = 1, x = 7arrow_forwardSolve the absolute inequality | x + 5 > 3 ○ a) (-∞, -8] U[-2, ∞0) ☐ b) (-8, -2) c) (-2, ∞0) ○ d) (-∞, - 8) U(-2, ∞0)arrow_forward
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