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A well-known brokerage firm executive claimed that at least 22 % 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 144 randomly selected people, 30 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: Ho:p = 0.22 Ha:p > 0.22 Calculate the test statistic, rounded to 3 decimal places 2 =

A well-known brokerage firm executive claimed that at least 22 % 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 144 randomly selected people, 30 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: Ho:p = 0.22 Ha:p > 0.22 Calculate the test statistic, rounded to 3 decimal places 2 =

Calculus For The Life Sciences
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter12: Probability
Section12.3: Conditional Probability; Independent Events; Bayes' Theorem
Problem 39E: The following problem submitted by Daniel Hahn of Blairstown, Iowa, appeared in the Ask Marilyn...
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A well known brokeage firm executive claimed that at least 22% of investors are currently confident of meeting their investment goals.
A well-known brokerage firm executive claimed that at least 22 % 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 144 randomly selected people, 30 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: Ho:p = 0.22 Ha:p > 0.22 Calculate the test statistic, rounded to 3 decimal places z =
Transcribed Image Text:A well-known brokerage firm executive claimed that at least 22 % 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 144 randomly selected people, 30 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: Ho:p = 0.22 Ha:p > 0.22 Calculate the test statistic, rounded to 3 decimal places z =
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