Answered: people who had a certain subtype of…

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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Question

A researcher randomly samples 100 people who had a certain subtype of influenza A at The General Hospital in the last month. For this sample, the mean time of being symptomatic was 8.6 days and the standard deviation was of 3.3 days.

Assuming this data follows a normal distribution, what is the 95% confidence interval?

A patient comes into The General Hospital with symptoms similar to the subtype of influenza A. They say they have been symptomatic for 15 days. How do you interpret this information given A? Do you think this patient is from the same population as the study?

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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