Question

you draw a card from a deck if you get a red card you win nothing if you get a spade you win 14 for any club you win 28 plus an extra 10 for the ace of clubs find the stanard deviation of the amount you might win drawin a card

Answer 1

Answer: Standard deviation is 11.6

Explanation:

Sample mean 52/4=13

X. X---x(bar). X---x(bar)^2

0. 0--13=-13. -13^2=169

14. 14--13=1. 1^2=1

28. 28--13=15. 15^2=225

10. 10--13=--3. --3^2=9

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52. 404

Standard deviation=√404/3=11.6