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A new video game is being developed and the data below shows how long it took for a group of testers to complete the first

A new video game is being developed and the data below shows how long it took for a group of testers to complete the first level. Time (minutes) No of testers 35 < 45 5 45 < 55 11 55 < 65 15 65 < 75 26 75 < 85 19 85 < 95 13 95 < 105 6 Calculate the standard deviation Question 14Answer A. 20.50 minutes B. 18.85 minutes C. 16.26 minutes D. 15.56 minutes

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