PRACTICE OF STATS - 1 TERM ACCESS CODE
4th Edition
ISBN: 9781319403348
Author: BALDI
Publisher: Macmillan Higher Education
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Question
Chapter 11, Problem 11.8AYK
(a)
To determine
To use the technology of your choice to find the proportion of observations from a standard
(a)
Expert Solution
Answer to Problem 11.8AYK
The proportion of observations for
Explanation of Solution
It is given that we have to use the technology of choice to find the proportion of observations from a standard normal distribution so, we will use excel
Thus, we have to find the probability for
| For z<2.85 | =NORM.S.DIST(2.85,TRUE) |
The result is as:
| For z<2.85 | 0.99781 |
Therefore, the proportion of observations for
And the sketch for the following is as:
(b)
To determine
To use the technology of your choice to find the proportion of observations from a standard normal distribution and also sketch a standard normal curve and shade the area.
(b)
Expert Solution
Answer to Problem 11.8AYK
The proportion of observations for
Explanation of Solution
It is given that we have to use the technology of choice to find the proportion of observations from a standard normal distribution so, we will use excel function to solve the probability. The function used is as:
Thus, we have to find the probability for
| For z>2.85 | =1-NORM.S.DIST(2.85,TRUE) |
The result is as:
| For z>2.85 | 0.002186 |
Therefore, the proportion of observations for
And the sketch for the following is as:
(c)
To determine
To use the technology of your choice to find the proportion of observations from a standard normal distribution and also sketch a standard normal curve and shade the area.
(c)
Expert Solution
Answer to Problem 11.8AYK
The proportion of observations for
Explanation of Solution
It is given that we have to use the technology of choice to find the proportion of observations from a standard normal distribution so, we will use excel function to solve the probability. The function used is as:
Thus, we have to find the probability for
| For z>-1.66 | =1-NORM.S.DIST(-1.66,TRUE) |
The result is as:
| For z>-1.66 | 0.95154 |
Therefore, the proportion of observations for
And the sketch for the following is as:
(d)
To determine
To use the technology of your choice to find the proportion of observations from a standard normal distribution and also sketch a standard normal curve and shade the area.
(d)
Expert Solution
Answer to Problem 11.8AYK
The proportion of observations for
Explanation of Solution
It is given that we have to use the technology of choice to find the proportion of observations from a standard normal distribution so, we will use excel function to solve the probability. The function used is as:
Thus, we have to find the probability for
| For -1.66 | =NORM.S.DIST(2.85,TRUE)-NORM.S.DIST(-1.66,TRUE) |
The result is as:
| For -1.66 | 0.949356 |
Therefore, the proportion of observations for
And the sketch for the following is as:
(e)
To determine
To explain in your words why these proportions can also be considered probabilities.
(e)
Expert Solution
Explanation of Solution
As we know that these are the probabilities as they satisfy all the three conditions that are:
For any
Probability of
If
Thus, if all the above three conditions are satisfied then these proportions can also be considered probabilities.
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Chapter 11 Solutions
PRACTICE OF STATS - 1 TERM ACCESS CODE
Ch. 11 - Prob. 11.1AYKCh. 11 - Prob. 11.2AYKCh. 11 - Prob. 11.3AYKCh. 11 - Prob. 11.4AYKCh. 11 - Prob. 11.5AYKCh. 11 - Prob. 11.6AYKCh. 11 - Prob. 11.7AYKCh. 11 - Prob. 11.8AYKCh. 11 - Prob. 11.9AYKCh. 11 - Prob. 11.10AYK
Ch. 11 - Prob. 11.11AYKCh. 11 - Prob. 11.12AYKCh. 11 - Prob. 11.13AYKCh. 11 - Prob. 11.14AYKCh. 11 - Prob. 11.15CYSCh. 11 - Prob. 11.16CYSCh. 11 - Prob. 11.17CYSCh. 11 - Prob. 11.18CYSCh. 11 - Prob. 11.19CYSCh. 11 - Prob. 11.20CYSCh. 11 - Prob. 11.21CYSCh. 11 - Prob. 11.22CYSCh. 11 - Prob. 11.23CYSCh. 11 - Prob. 11.24CYSCh. 11 - Prob. 11.25ECh. 11 - Prob. 11.26ECh. 11 - Prob. 11.27ECh. 11 - Prob. 11.28ECh. 11 - Prob. 11.29ECh. 11 - Prob. 11.30ECh. 11 - Prob. 11.31ECh. 11 - Prob. 11.32ECh. 11 - Prob. 11.33ECh. 11 - Prob. 11.34ECh. 11 - Prob. 11.35ECh. 11 - Prob. 11.36ECh. 11 - Prob. 11.37ECh. 11 - Prob. 11.38ECh. 11 - Prob. 11.39ECh. 11 - Prob. 11.40ECh. 11 - Prob. 11.41ECh. 11 - Prob. 11.42ECh. 11 - Prob. 11.43ECh. 11 - Prob. 11.44ECh. 11 - Prob. 11.45ECh. 11 - Prob. 11.46ECh. 11 - Prob. 11.47ECh. 11 - Prob. 11.48ECh. 11 - Prob. 11.49ECh. 11 - Prob. 11.50ECh. 11 - Prob. 11.51E
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