Concept explainers
(a)
To find: The mean yields of the control group and treatment group.
(a)
Answer to Problem 8CT
The mean yields of the control group and treatment group
Explanation of Solution
Given:
Bone density (g/cm2)
Control group | ||||||||
Treatment group |
Calculation:
The mean
Here
And
The mean yield of the control group is given by
The mean score of the treatment group is given by
Conclusion:
Hence, the mean yields of the control group and treatment group are
(b)
To find: The experimental difference of the means.
(b)
Answer to Problem 8CT
The experimental difference of the means is
Explanation of Solution
Given:
Bone density (g/cm2)
Control group | ||||||||
Treatment group |
Calculation:
Experimental difference of the mean is the difference of the mean of treatment group and the mean of the control group.
Thus,
Conclusion:
Hence, the experimental difference of the means is
(c)
To display: The data in double dot plot.
(c)
Answer to Problem 8CT
It is concluded that the vitamin supplement has no effect on bone density.
Explanation of Solution
Given:
Bone density (g/cm2)
Control group | ||||||||
Treatment group |
Calculation:
Double dot plot for the given data is
From the above double dot plot you can conclude that the vitamin supplement has no effect on bone density.
Conclusion:
Hence, the double dot plot is displayed and concluded that the vitamin supplement has no effect on bone density.
(d)
To find: The conclusion about the hypothesis.
(d)
Answer to Problem 8CT
The hypothesis is probably true.
Explanation of Solution
Given:
Bone density (g/cm2)
Control group | ||||||||
Treatmentgroup |
Calculation:
The hypothesis is probably true.
The hypothesis assumes the difference of the mean is
Conclusion:
Hence, The hypothesis is probably true and the difference of the mean is
Chapter 11 Solutions
Big Ideas Math A Bridge To Success Algebra 2: Student Edition 2015
- eric pez Xte in z= Therefore, we have (x, y, z)=(3.0000, 83.6.1 Exercise Gauss-Seidel iteration with Start with (x, y, z) = (0, 0, 0). Use the convergent Jacobi i Tol=10 to solve the following systems: 1. 5x-y+z = 10 2x-8y-z=11 -x+y+4z=3 iteration (x Assi 2 Assi 3. 4. x-5y-z=-8 4x-y- z=13 2x - y-6z=-2 4x y + z = 7 4x-8y + z = -21 -2x+ y +5z = 15 4x + y - z=13 2x - y-6z=-2 x-5y- z=-8 realme Shot on realme C30 2025.01.31 22:35 farrow_forwardUse Pascal's triangle to expand the binomial (6m+2)^2arrow_forwardListen A falling object travels a distance given by the formula d = 6t + 9t2 where d is in feet and t is the time in seconds. How many seconds will it take for the object to travel 112 feet? Round answer to 2 decimal places. (Write the number, not the units). Your Answer:arrow_forward
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