A well-known brokerage firm executive claimed that at least 39 % of investors are currently confident of meeting their investment goals. An XYZ Investor Optimism Survey, conducted over a two week period, found that out of 99 randomly selected people, 38 of them said they are confident of meeting their goals. Suppose you are have the following null and alternative hypotheses for a test you are running:
A well-known brokerage firm executive claimed that at least 39 % of investors are currently confident of meeting their investment goals. An XYZ Investor Optimism Survey, conducted over a two week period, found that out of 99 randomly selected people, 38 of them said they are confident of meeting their goals. Suppose you are have the following null and alternative hypotheses for a test you are running:
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section9.3: Binomial Probability
Problem 2E: If a binomial experiment has probability p success, then the probability of failure is...
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A well-known brokerage firm executive claimed that at least 39 % of investors are currently confident of meeting their investment goals. An XYZ Investor Optimism Survey, conducted over a two week period, found that out of 99 randomly selected people, 38 of them said they are confident of meeting their goals.
Suppose you are have the following null and alternative hypotheses for a test you are running:
H0:p=0.39
Ha:p<0.39
Calculate the test statistic, rounded to 3 decimal places
z=
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