4 6 5 5 6 2 6 5 1 9 7 5 2 6 5 7 1 6 6 5 6 3 5 5 4 4 5 6 0 4 1 5 6 4 7 6 3 5 6 8 6 6 1 5 4 6 8 1 5 5 5 3 6 4 7 2 10 3 6 6 2 4 8 Many Alpine ski centers base their projections of revenues and profits on the assumption that the average Alpine skier skis four times per year. To investigate the validity of this assumption, a random sample of 63 skiers is drawn and each is asked to report the number of times he or she skied the previous year. If we assume that the standard deviation is 2, can we infer at the 10% significance level that the assumption is wrong.
4 6 5 5 6 2 6 5 1 9 7 5 2 6 5 7 1 6 6 5 6 3 5 5 4 4 5 6 0 4 1 5 6 4 7 6 3 5 6 8 6 6 1 5 4 6 8 1 5 5 5 3 6 4 7 2 10 3 6 6 2 4 8 Many Alpine ski centers base their projections of revenues and profits on the assumption that the average Alpine skier skis four times per year. To investigate the validity of this assumption, a random sample of 63 skiers is drawn and each is asked to report the number of times he or she skied the previous year. If we assume that the standard deviation is 2, can we infer at the 10% significance level that the assumption is wrong.
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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Many Alpine ski centers base their projections of revenues and profits on the assumption
that the average Alpine skier skis four times per year. To investigate the validity of this
assumption, a random sample of 63 skiers is drawn and each is asked to report the number
of times he or she skied the previous year. If we assume that the standard deviation is 2,
can we infer at the 10% significance level that the assumption is wrong.
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