The College Board states that the students spend an average of $1200each year on textbooks. The Dean of a university believes it’s not the average at hisschool. He samples 51 students and finds they have an average cost of $1260 with astandard deviation of $175. What critical value is needed for this test at alpha=0.05? a. Z = +/- 1.65b. Z = +/- 2.44c. T=+/- 1.676d. T=+/- 2.009
The College Board states that the students spend an average of $1200each year on textbooks. The Dean of a university believes it’s not the average at hisschool. He samples 51 students and finds they have an average cost of $1260 with astandard deviation of $175. What critical value is needed for this test at alpha=0.05? a. Z = +/- 1.65b. Z = +/- 2.44c. T=+/- 1.676d. T=+/- 2.009
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
The College Board states that the students spend an average of $1200
each year on textbooks. The Dean of a university believes it’s not the average at his
school. He samples 51 students and finds they have an average cost of $1260 with a
standard deviation of $175. What critical value is needed for this test at alpha=0.05?
each year on textbooks. The Dean of a university believes it’s not the average at his
school. He samples 51 students and finds they have an average cost of $1260 with a
standard deviation of $175. What critical value is needed for this test at alpha=0.05?
a. Z = +/- 1.65
b. Z = +/- 2.44
c. T=+/- 1.676
d. T=+/- 2.009
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