16. A researcher knew that before cell phones, a person made on average 3.1 calls per day. He believes that the number of calls made per day today is higher. He selects a random sample of 26 individuals who use a cell phone and asks them to keep track of the number of calls that they made on a certain day. The mean was 3.3. At a = .10, is there enough evidence to support the researcher's claim? The standard deviation for the population found by a previous study is 0.6. Assume that the variable is normally distributed. (You can use the traditional method or p-value method). Round your final answer to three decimal places.
16. A researcher knew that before cell phones, a person made on average 3.1 calls per day. He believes that the number of calls made per day today is higher. He selects a random sample of 26 individuals who use a cell phone and asks them to keep track of the number of calls that they made on a certain day. The mean was 3.3. At a = .10, is there enough evidence to support the researcher's claim? The standard deviation for the population found by a previous study is 0.6. Assume that the variable is normally distributed. (You can use the traditional method or p-value method). Round your final answer to three decimal places.
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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