Bana 336 - Study guides, Class notes & Summaries
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BANA 3363 EXAM 3 WITH COMPLETE SOLUTIONS
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BANA 3363 EXAM 3 WITH COMPLETE SOLUTIONS 
A chi-squared distribution is symmetric. - Answer-false 
 
The number of degrees of freedom for a contingency table with r rows and c columns is: 
- Answer-( r - 1)( c - 1) 
 
 
To determine the critical values in the chi-squared distribution table, you need to know the: - Answer-degrees of freedom. 
 
The only way the chi-squared test statistic can be zero is if the observed frequencies are all exactly the same as the expected frequencies. - Answer-True...
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BANA 3363 TEST QUESTONS WITH REVISED AND UPDATED ANSWERS ALL CORRECT
- Exam (elaborations) • 5 pages • 2024
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BANA 3363 TEST QUESTONS WITH REVISED AND UPDATED ANSWERS ALL CORRECT 
A simple random sample of 10 items resulted in a sample mean of 10. The population standard deviation is 5. Round your answers to two decimal places. 
a.	What is the standard error of the mean, ? 
b.	At 95% confidence, what is the margin of error? - Answer-A. 1.58 
b. 3.09 
 
A simple random sample of 60 items resulted in a sample mean of 80. The population standard devidation is 15. 
A.	compute the 95% confidence interval f...
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BANA 3363 STUDY QUESTIONS WITH CORRECT ANSWERS
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BANA 3363 STUDY QUESTIONS WITH CORRECT ANSWERS 
The standard deviation is calculated by: - Answer-taking the squared root of the variance. 
 
Based on a random sample of 50 Ford trucks, statisticians estimated that the average Ford truck on the American roads has a fuel efficiency of somewhere better 15 & 21 miles per gallon. Assuming the sampling was done correctly, this is a good: - Answer- interval estimate of the population mean for the efficiency of Ford 
 
When performing a two tail hypo...
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