Help with statistics question!!

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Art Department
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#1
Report Thread starter 5 years ago
#1
Can I get help with this question please!
Would be massively appreciated!!


Three salespersons, Alex, Chris and Pat are responsible for the sales of two products, P1 and P2. The numbers of sales they have made over the past year are as follows

Alex. Chris. Pat.
P1. 5. 13. 6
P2. 12. 7. 14






Their manager is interested in whether there is any evidence that certain salespersons are better at selling one product rather than the other. What are the expected numbers of sales if there is no connection between salesperson and product? Give your answers correct to one decimal place.

Alex and P1 Answer:
Alex and P2 Answer:
Chris and P1 Answer
Chris and P2 Answer
Pat and P1 Answer
Pat and P2 Answer

What is the value of the chi-squared statistic? Give your answer correct to 2 decimal places. Answer

What is the probability of getting a chi-squared statistic as big as this if there really were no connection between salesperson and product? Give your answer correct to two decimal places. Write as a number, not a percentage, for example, 0.17 not 17%. Answer
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Kevin De Bruyne
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#2
Report 5 years ago
#2
(Original post by Art Department)
Can I get help with this question please!
Would be massively appreciated!!


Three salespersons, Alex, Chris and Pat are responsible for the sales of two products, P1 and P2. The numbers of sales they have made over the past year are as follows

Alex. Chris. Pat.
P1. 5. 13. 6
P2. 12. 7. 14






Their manager is interested in whether there is any evidence that certain salespersons are better at selling one product rather than the other. What are the expected numbers of sales if there is no connection between salesperson and product? Give your answers correct to one decimal place.

Alex and P1 Answer:
Alex and P2 Answer:
Chris and P1 Answer
Chris and P2 Answer
Pat and P1 Answer
Pat and P2 Answer

What is the value of the chi-squared statistic? Give your answer correct to 2 decimal places. Answer

What is the probability of getting a chi-squared statistic as big as this if there really were no connection between salesperson and product? Give your answer correct to two decimal places. Write as a number, not a percentage, for example, 0.17 not 17%. Answer
What have you tried? I think the biggest challenge in this question is knowing what to do in the very first part - have you ever seen a similar example in lectures?

I have also asked for your thread to be moved to Maths - Mathematics is for discussion of the course at university, not for help with university-level maths problems.
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