Answered: The manager of a restaurant has to…

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 a restaurant has to choose between two varieties of
rice, A and B, and selects two random samples of 10 one-kilo bags of rice of each type
of rice and finds the following percentages of broken grains per kilo:

A	6	5	6	7	4	7	6	4	3	6
B		6	7	9	5	8	7	6	10	8

Using a 95% confidence interval, find the average difference of percentages of
broken grains per kilo of rice of the two varieties.

Can it be accepted that there are no significant differences between the two population means? Assume that the percentages of broken grains per kilo in each variety are normally distributed with the same variance

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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