The manager of The Cheesecake Factory in Memphis reports that on six randomly selected weekdays, the number of customers served was 95, 250, 180, 190, 90, and 260. She believes that the number of customers served on weekdays follows a normal distribution. Construct the 95% confidence interval for the average number of customers served on weekdays.Note: Round your final answers to 2 decimal places. How can the margin of error reported in part a be reduced?multiple choiceIncrease the sample sizeDecrease the sample sizeIncrease the standard deviationIncrease the confidence level

Answered: Construct the 95% confidence interval…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The manager of The Cheesecake Factory in Memphis reports that on six randomly selected weekdays, the number of customers served was 95, 250, 180, 190, 90, and 260. She believes that the number of customers served on weekdays follows a normal distribution.

- Construct the 95% confidence interval for the average number of customers served on weekdays.
  
  Note: Round your final answers to 2 decimal places.
- How can the margin of error reported in part a be reduced?
  
  multiple choice
  - Increase the sample size
  - Decrease the sample size
  - Increase the standard deviation
  - Increase the confidence level

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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