Answered: A child psychologist wanted to…

Name: A child psychologist wanted to determine if the babies responded to th
Uploaded: 2024-03-20T07:06:27.000Z
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Description: A child psychologist wanted to determine if the babies responded to their mothers voice when they could not see them. She measured the total time the babies actively sucked their pacifiers while listening to their mothers' voices without seeing them

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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A child psychologist wanted to determine if the babies responded to their mothers voice when they could not see them. She measured the total time the babies actively sucked their pacifiers while listening to their mothers' voices without seeing them for 10 minutes. She ran this test on 12 babies and found the average time was 4.5 minutes with a standard deviation of 0.9 minutes. What one is the correct 90% confidence interval for the average amount of time the babies sucked their pacifiers that can be obtained from this data? (Assume that the times are approximately Normally distributed)

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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