The Statistics Games are played by a large number of students across the county. Last year, 32% of Clayton State participated in the Games. You wonder: “Has the proportion increased this year?”. To find out, you take a random sample of 250 CSU students and ask them if they participated in the Games this year. You find that 38% did. Should you calculate a z-score or a t-score for your hypothesis test?ANeither, because the sample is not big enough- they did not ask all CSU students.Bt-score because the sample is random and n is greater than 30.Cz-score, because we are testing proportions, and the sample is random and has at least 5 successes (np=250*0.32) and 5 failures (nq = 250*0.68).Dt-score because we don't know the population standard deviation.Ez-score because our sample is random and the sample size is greater than 30.

Answered: The Statistics Games are played by a…

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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The Statistics Games are played by a large number of students across the county. Last year, 32% of Clayton State participated in the Games. You wonder: “Has the proportion increased this year?”. To find out, you take a random sample of 250 CSU students and ask them if they participated in the Games this year. You find that 38% did. Should you calculate a z-score or a t-score for your hypothesis test?

Neither, because the sample is not big enough- they did not ask all CSU students.

t-score because the sample is random and n is greater than 30.

z-score, because we are testing proportions, and the sample is random and has at least 5 successes (np=250*0.32) and 5 failures (nq = 250*0.68).

t-score because we don't know the population standard deviation.

z-score because our sample is random and the sample size is greater than 30.

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