Determine the point estimate of the population mean and margin of error for the confidence interval with lower bound 14 and upper bound: 26.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question
**Provide an appropriate response.**

**Determine the point estimate of the population mean and margin of error for the confidence interval with lower bound 14 and upper bound: 26.**

1. \( \overline{x} = 20, E = 12 \)
2. \( \overline{x} = 26, E = 6 \)
3. \( \overline{x} = 20, E = 6 \)
4. \( \overline{x} = 14, E = 12 \)

Explanation:

Given the confidence interval [14, 26], we want to determine the point estimate (sample mean \( \overline{x} \)) and the margin of error (E).

The point estimate \( \overline{x} \) is the midpoint of the confidence interval, which can be found using the formula:

\[ \overline{x} = \frac{\text{Lower bound} + \text{Upper bound}}{2} \]

\[ \overline{x} = \frac{14 + 26}{2} = \frac{40}{2} = 20 \]

The margin of error \( E \) is the distance from the point estimate to either end of the interval:

\[ E = \text{Upper bound} - \overline{x} \]

\[ E = 26 - 20 = 6 \]

So, the correct answer is:

\[ \overline{x} = 20, E = 6 \]

Thus, the correct answer choice is 3:
\[ \overline{x} = 20, E = 6 \]
Transcribed Image Text:**Provide an appropriate response.** **Determine the point estimate of the population mean and margin of error for the confidence interval with lower bound 14 and upper bound: 26.** 1. \( \overline{x} = 20, E = 12 \) 2. \( \overline{x} = 26, E = 6 \) 3. \( \overline{x} = 20, E = 6 \) 4. \( \overline{x} = 14, E = 12 \) Explanation: Given the confidence interval [14, 26], we want to determine the point estimate (sample mean \( \overline{x} \)) and the margin of error (E). The point estimate \( \overline{x} \) is the midpoint of the confidence interval, which can be found using the formula: \[ \overline{x} = \frac{\text{Lower bound} + \text{Upper bound}}{2} \] \[ \overline{x} = \frac{14 + 26}{2} = \frac{40}{2} = 20 \] The margin of error \( E \) is the distance from the point estimate to either end of the interval: \[ E = \text{Upper bound} - \overline{x} \] \[ E = 26 - 20 = 6 \] So, the correct answer is: \[ \overline{x} = 20, E = 6 \] Thus, the correct answer choice is 3: \[ \overline{x} = 20, E = 6 \]
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 4 images

Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman