Only c and d

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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Only c and d
Bill, a psychologist, has developed a new aptitude test. He was able to show (through a somewhat
dubious study) that 60% of the public passed the test. A second psychologist, Tamera, wants to
recreate this study. She believes the actual percentage is less than 60%. A random sample of 320
people took the test, and 182 passed.
a) State the null and altemate hypotheses to test the claim that the actual percentage is different
than 60%.
Ho: p =
HA: p#
b) What is the point estimate for the proportion of the public that passed the test?
Point Estimate =
c) Using a standard error of 0.0274, what is the test statistic?
Test Statistic =
d) Compute the p-value.
The p-value-
The p-value « .001
e) Should Tamera reject or fail to reject the null hypothesis?
Transcribed Image Text:Bill, a psychologist, has developed a new aptitude test. He was able to show (through a somewhat dubious study) that 60% of the public passed the test. A second psychologist, Tamera, wants to recreate this study. She believes the actual percentage is less than 60%. A random sample of 320 people took the test, and 182 passed. a) State the null and altemate hypotheses to test the claim that the actual percentage is different than 60%. Ho: p = HA: p# b) What is the point estimate for the proportion of the public that passed the test? Point Estimate = c) Using a standard error of 0.0274, what is the test statistic? Test Statistic = d) Compute the p-value. The p-value- The p-value « .001 e) Should Tamera reject or fail to reject the null hypothesis?
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