Essay
The average grade of a sample of 30 students on their second statistics examination was 85 with a standard deviation of 11. Is the variance of the population significantly more than 80? Use a 0.05 level of significance.
Correct Answer:
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H0: 
2 80
Ha: 2 > 80
chi...View Answer
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Correct Answer:
Verified
2 80Ha:
2 > 80chi...
View Answer
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