eaders attending a large national leadership conference and that 53 were found to be extroverts. Does this indicate that the population proportion of extroverts among college student government leaders is different (either way) from 79%? Use ? = 0.01.   (a) What is the level of significance? State the null hypothesis  H0  and the alternate hypothesis  H1

College Algebra
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ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter9: Sequences, Probability And Counting Theory
Section9.7: Probability
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leaders attending a large national leadership conference and that 53 were found to be extroverts. Does this indicate that the population proportion of extroverts among college student government leaders is different (either way) from 79%? Use ? = 0.01.

 
(a) What is the level of significance?


State the null hypothesis 
H0
 and the alternate hypothesis 
H1
.

H0
p         

H1
p         

(b) What sampling distribution will you use?
The Student's tThe standard normal    
since np               

and nq               

What is the value of the sample test statistic? (Round your answer to two decimal places.)


(c) Find the P-value of the test statistic. (Round your answer to four decimal places.)


Sketch the sampling distribution and show the area corresponding to the P-value.
   
   

(d) Based on your answers in parts (a) to (c), will you reject or fail to reject the null hypothesis? Are the data statistically significant at level ??
At the ? = 0.01 level, we reject the null hypothesis and conclude the data are statistically significant.At the ? = 0.01 level, we reject the null hypothesis and conclude the data are not statistically significant.    At the ? = 0.01 level, we fail to reject the null hypothesis and conclude the data are statistically significant.At the ? = 0.01 level, we fail to reject the null hypothesis and conclude the data are not statistically significant.

(e) Interpret your conclusion in the context of the application.
There is sufficient evidence at the 0.01 level to conclude that the true proportion of extroverts among college student government leaders differs from 79%.There is insufficient evidence at the 0.01 level to conclude that the true proportion of extroverts among college student government leaders differs from 79%.
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