1. A sample from 16 different farms across Quebec shows that the hay production in bales per acre is normally distributed N(100,50).
a. (2p )What is the probability that a random farm from this sample produces less than 80 bales/acre?



b. (2p) What is the probability that another random sample of nine farms has an average of less than 80 bales/acre?



c. (1p) Is the population mean known?



d. (2p) What can we learn from the central limit theorem in this case?



e. (3p) Calculate a 90 % confidence interval around the population mean.




f. (2p) Interpret: what does your answer in e) mean?


g. (2p) These nine farms were actually a pilot study. What is the minimal sample size needed to compute a 95 % confidence interval around the population mean?

Posted Date: 4/8/2013 8:05:34 PM | Location : Canada

Ask an Expert

Related Discussions:- Statistics question, Assignment Help, Ask Question on Statistics question, Get Answer, Expert's Help, Statistics question Discussions

Write discussion on Statistics question
Your posts are moderated

Write your message here..

Related Questions

Standard error of the differnce between means., IN two separate studies, th... IN two separate studies, the actual difference between the means of a treated group and untreated group is 3 points. However, in one study sm1-m2 is very large and so the 3 points

I need 10 statistic questions solved, Unfortunately the 10 questions are ti... Unfortunately the 10 questions are timed and when I send them to you, I MUST have back in 3-1/2 to 4 hours. Can you help?

Recruitment process process map, What are the steps in a recruitment proces... What are the steps in a recruitment process and who are responsible for each step?

Historigrams and histograms, Differentiate between historigrams and histogr... Differentiate between historigrams and histogram

Cost inventory, how do I find the cost of inventory? how do I find the cost of inventory?

Calculate regression analysis, Questions In a regression analysis, a nu... Questions In a regression analysis, a nurse researcher found a correlation of .82 between pain relief scores and satisfaction with nursing care.  She also calculated the follow

Are depreciation, Are depreciation, depletion and amortization similar? ... Are depreciation, depletion and amortization similar? In accounting the terms depreciation, depletion and amortization often involve the movement of costs from the balance s

#measures of central tendency, #what is the importance of measures of centr... #what is the importance of measures of central tendency to Human resource management

Cost accounting, what are the objective and importance of cost accounting a... what are the objective and importance of cost accounting and managerial decision making.

Capital budget, Capital budget The piece of a budget: a separate budget: d... Capital budget The piece of a budget: a separate budget: dedicated to proposed additions to capital assets & the means of financing to those additions,