College students and surfers Rex Robinson and Sandy Hudson collected data on the self-reported number of days surfed in a month for 30 longboard surfers and 30 shortboard surfers. Complete parts a and b below. Full data set Longboard:21, 6, 9, 4, 21, 22, 13, 6, 18, 10, 12, 11, 4, 7, 18, 12, 7, 4, 10, 7, 18, 12, 21, 21, 17, 18, 22, 13, 13, 8 Shortboard: 9, 4, 5, 17, 18, 19, 13, 7, 20, 11, 5, 20, 8, 4, 11, 12, 17, 12, 4, 17, 17, 15, 19, 16, 12, 7, 10, 9, 6, 4
College students and surfers Rex Robinson and Sandy Hudson collected data on the self-reported number of days surfed in a month for 30 longboard surfers and 30 shortboard surfers. Complete parts a and b below. Full data set Longboard:21, 6, 9, 4, 21, 22, 13, 6, 18, 10, 12, 11, 4, 7, 18, 12, 7, 4, 10, 7, 18, 12, 21, 21, 17, 18, 22, 13, 13, 8 Shortboard: 9, 4, 5, 17, 18, 19, 13, 7, 20, 11, 5, 20, 8, 4, 11, 12, 17, 12, 4, 17, 17, 15, 19, 16, 12, 7, 10, 9, 6, 4
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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Transcribed Image Text:College students and surfers Rex Robinson and Sandy Hudson collected data on the self-reported number of days surfed in a
month for 30 longboard surfers and 30 shortboard surfers. Complete parts a and b below.
Full data set
Longboard:21, 6, 9, 4, 21, 22, 13, 6, 18, 10, 12, 11, 4, 7, 18, 12,
7, 4, 10, 7, 18, 12, 21, 21, 17, 18, 22, 13, 13, 8
Shortboard: 9, 4, 5, 17, 18, 19, 13, 7, 20, 11, 5, 20, 8, 4, 11, 12,
17, 12, 4, 17, 17, 15, 19, 16, 12, 7, 10, 9, 6, 4
a. Compute the means for both longboards and shortboards.
The mean for longboards is 12.8 days. (Round to one decimal places as needed.)
The mean for shortboards is 11.6 days. (Round to one decimal places as needed.)
Fill in the correct answer below.
So longboarders tend to go surfing more.
b. Compute the standard deviation of both longboards and shortboards.
The standard deviation for longboards is
days. (Round to one decimal places as needed.)
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