The manager of The Cheesecake Factory in Boston reports that in a sample of eight randomly selected weekdays, the average number of customers served was 131.7 with a sample standard deviation of 43.2. She believes that the number of customers served on weekdays follows a normal distribution.(a) Give the margin of error for the 99% confidence interval for the average number of customers served on weekdays. (Round to one decimal place.) (b) Construct the 99% confidence interval for the average number of customers served on weekdays. (Round to one decimal place.)Confidence Interval: to

Given Data: x¯=131.7s=43.2n=8 t-value corresponding to 99% Confidence Interval=3.5

Answered: he manager of The Cheesecake Factory in…

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 Boston reports that in a sample of eight randomly selected weekdays, the average number of customers served was 131.7 with a sample standard deviation of 43.2. She believes that the number of customers served on weekdays follows a normal distribution.

(a) Give the margin of error for the 99% confidence interval for the average number of customers served on weekdays. (Round to one decimal place.)

(b) Construct the 99% confidence interval for the average number of customers served on weekdays. (Round to one decimal place.)

Confidence Interval: to

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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