Standard deviation of the population
A sample of 100 "AA" Alkaline batteries has mean life of 8 months. The standard deviation of the population is known to be 4 months. Find the 90% confidence interval of the popualtion mean life of "AA" Alkaline batteries.
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Discuss how the notion of union and intersection apply to retrieving records in databases. Give an example of 2 sets that might appear in a database to help in your description.
R is the relation of positive integers N that meet R={(x,y) | x + 3y = 12}. Represent R as a set of ordered pairs. Represent R in set form (domain and range). Compute R^-1, R%u0305 and R o R (represent the composition in matrix form).
A sample of 64 "AAA" Alkaline batteries has mean life of 7 months. The standard deviation of the population is known to be 2 months. Find the 95% confidence interval of the popualtion mean life of "AAA" Alkaline batteries?
A sample 16 MBA student taking OTM course in spring of 2013, describes an average income of $62,000 with the sample standard deviation of 2,000. Find the 95% confidence interval of the population mean income of MBA student.
The standard deviation of the population is known to be 4 months. Find the 90% confidence interval of the popualtion mean life of "AA" Alkaline batteries.
A sample 9 MBA student taking OTM course in spring of 2013, describes an average income of $95,000 with the sample standard deviation of 9,000. Find the 90% confidence interval of the population mean income of MBA student.
A sample of 36 "AA" Alkaline batteries has mean life of 6 months. The standard deviation of the population is known to be 3 months. Find the 95% confidence interval of the popualtion mean life of "AA" Alkaline batteries.
A sample 25 MBA student taking OTM course in spring of 2013, describes an average income of $85,000 with the sample standard deviation of 5,000. Determine the 95% confidence interval of the population mean income of MBA student.
Why is it significant to record transactions in a journal in the chronological order? What can happen if you don't put them in chronological order? How can you fix problems that can occur from not having them in chronological order?
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