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October 20th, 2013, 02:11 AM  #1 
Newbie Joined: Oct 2013 Posts: 1 Thanks: 0  Probability Question Help. Please!
You have been hired as a consultant by a strawberry farmer. After being awarded the contract, you receive the following letter. To: Recently Hired Statistician From: Morgan Hill Berry Growers Please advise us on which company to use as our strawberry distributor. Four highly recommended distributors have provided us with statistical data on the weekly prices for one load of strawberries per week for a tenweek period last year. Prices fluctuate according to availability, and we would like to use the company with the lowest overall price and the least amount of fluctuation. We would like your written report showing your results and a detailed recommendation as to which company we should choose. Thank you. Data in attachment: [attachment=0:3qoxi2vd]maths.png[/attachment:3qoxi2vd] Any help is appreciated. Thank you 
October 21st, 2013, 03:32 AM  #2 
Senior Member Joined: Oct 2013 From: Sydney Australia Posts: 126 Thanks: 0  Re: Probability Question Help. Please!
I would suggest that you find the mean and standard deviation for each of the companies Week FP FnF always Berry mean 327 318 323 318 sd 20.8 20.3 19.6 22.6 I did this and these were my results. (The table does not diplay properly). I make lots of mistakes so you should check. FnF and Berry have the cheapest average price $318 Fnf have a smaller standard deviation than Berry so there price fluctuates less. So FnF might be your choice. always Ripe has the least fluctuation in price but they are not as cheap. Maybe you are supposed to do more tests. Anyway, this is a starting point. 
October 21st, 2013, 04:37 AM  #3 
Newbie Joined: Oct 2013 Posts: 9 Thanks: 0  Re: Probability Question Help. Please!
Difficult one this with few data to go by. If fluctuation is your main criterion, why not go for the company with the least range in which case the forth column company is eliminated because it has a range of $70. Columns 2 and 3 give the least range. At this stage i would go for either columns 2 or 3 since the median value is $320 and both have the same range of $60. The median value for column 4 is $315 I realise that using the median value in this case is a bit of anomaly but it will do for starters 

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