(a)
Whether there is a 95% probability for the interval from 107.8 to 116.2 contains
(a)
![Check Mark](/static/check-mark.png)
Answer to Problem 18E
The explanation is incorrect.
Explanation of Solution
Given information:
95% confidence interval for the
(107.8, 116.2)
Since the confidence interval either contains or does not contain the population mean
Then
We know that the probability is either 0 or 1 (not 0.95).
Thus,
The explanation is incorrect.
(b)
Whether there is 95% chance for the interval (107.8, 116.2) contains
(b)
![Check Mark](/static/check-mark.png)
Answer to Problem 18E
The explanation is incorrect.
Explanation of Solution
Given information:
95% confidence interval for the mean IQ:
(107.8, 116.2)
Since the confidence interval always contains the sample mean.
Also,
Sample mean is the center of the confidence interval.
And
The probability is 1 instead of 0.95.
Thus,
The explanation is incorrect.
(c)
Whether the interval was constructed with method used to produce intervals for capturing the true mean in 95% of all possible samples.
(c)
![Check Mark](/static/check-mark.png)
Answer to Problem 18E
The explanation is correct.
Explanation of Solution
Given information:
95% confidence interval for the mean IQ:
(107.8, 116.2)
We know that
True mean is also known as population mean.
In this case,
The confidence interval of 95% of all possible samples will contain the true (population) mean.
Thus,
The explanation is correct.
(d)
Whether about 95% of the samples taken will contain the interval (107.8, 116.2).
(d)
![Check Mark](/static/check-mark.png)
Answer to Problem 18E
The explanation is incorrect.
Explanation of Solution
Given information:
95% confidence interval for the mean IQ:
(107.8, 116.2)
Since the samples will only contain the same confidence interval if the sample mean in the samples will be same.
Also,
The sample mean will be identical in a lot less than 95% of all possible samples.
Thus,
The explanation is incorrect.
(e)
Whether the probability for the interval (107.8, 116.2) captures
(e)
![Check Mark](/static/check-mark.png)
Answer to Problem 18E
The explanation is correct.
Explanation of Solution
Given information:
95% confidence interval for the mean IQ:
(107.8, 116.2)
Since the confidence interval either contains the population mean
Also,
The probability is either 1 or 0 (not 0.95).
Thus,
The explanation is correct.
Chapter 8 Solutions
PRACTICE OF STATISTICS F/AP EXAM
Additional Math Textbook Solutions
Pre-Algebra Student Edition
Basic Business Statistics, Student Value Edition
Calculus: Early Transcendentals (2nd Edition)
Introductory Statistics
Elementary Statistics
Thinking Mathematically (6th Edition)
- matharrow_forwardCompute the median of the following data. 32, 41, 36, 42, 29, 30, 40, 22, 25, 37arrow_forwardTask Description: Read the following case study and answer the questions that follow. Ella is a 9-year-old third-grade student in an inclusive classroom. She has been diagnosed with Emotional and Behavioural Disorder (EBD). She has been struggling academically and socially due to challenges related to self-regulation, impulsivity, and emotional outbursts. Ella's behaviour includes frequent tantrums, defiance toward authority figures, and difficulty forming positive relationships with peers. Despite her challenges, Ella shows an interest in art and creative activities and demonstrates strong verbal skills when calm. Describe 2 strategies that could be implemented that could help Ella regulate her emotions in class (4 marks) Explain 2 strategies that could improve Ella’s social skills (4 marks) Identify 2 accommodations that could be implemented to support Ella academic progress and provide a rationale for your recommendation.(6 marks) Provide a detailed explanation of 2 ways…arrow_forward
- Question 2: When John started his first job, his first end-of-year salary was $82,500. In the following years, he received salary raises as shown in the following table. Fill the Table: Fill the following table showing his end-of-year salary for each year. I have already provided the end-of-year salaries for the first three years. Calculate the end-of-year salaries for the remaining years using Excel. (If you Excel answer for the top 3 cells is not the same as the one in the following table, your formula / approach is incorrect) (2 points) Geometric Mean of Salary Raises: Calculate the geometric mean of the salary raises using the percentage figures provided in the second column named “% Raise”. (The geometric mean for this calculation should be nearly identical to the arithmetic mean. If your answer deviates significantly from the mean, it's likely incorrect. 2 points) Starting salary % Raise Raise Salary after raise 75000 10% 7500 82500 82500 4% 3300…arrow_forwardI need help with this problem and an explanation of the solution for the image described below. (Statistics: Engineering Probabilities)arrow_forwardI need help with this problem and an explanation of the solution for the image described below. (Statistics: Engineering Probabilities)arrow_forward
- 310015 K Question 9, 5.2.28-T Part 1 of 4 HW Score: 85.96%, 49 of 57 points Points: 1 Save of 6 Based on a poll, among adults who regret getting tattoos, 28% say that they were too young when they got their tattoos. Assume that six adults who regret getting tattoos are randomly selected, and find the indicated probability. Complete parts (a) through (d) below. a. Find the probability that none of the selected adults say that they were too young to get tattoos. 0.0520 (Round to four decimal places as needed.) Clear all Final check Feb 7 12:47 US Oarrow_forwardhow could the bar graph have been organized differently to make it easier to compare opinion changes within political partiesarrow_forwardDraw a picture of a normal distribution with mean 70 and standard deviation 5.arrow_forward
- What do you guess are the standard deviations of the two distributions in the previous example problem?arrow_forwardPlease answer the questionsarrow_forward30. An individual who has automobile insurance from a certain company is randomly selected. Let Y be the num- ber of moving violations for which the individual was cited during the last 3 years. The pmf of Y isy | 1 2 4 8 16p(y) | .05 .10 .35 .40 .10 a.Compute E(Y).b. Suppose an individual with Y violations incurs a surcharge of $100Y^2. Calculate the expected amount of the surcharge.arrow_forward
- MATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th...StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics for The Behavioral Sciences (MindTap C...StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage Learning
- Elementary Statistics: Picturing the World (7th E...StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman
![Text book image](https://www.bartleby.com/isbn_cover_images/9781119256830/9781119256830_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781305251809/9781305251809_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781305504912/9781305504912_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9780134683416/9780134683416_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781319042578/9781319042578_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781319013387/9781319013387_smallCoverImage.gif)