Edexcel Statistics S1 January 2012 Q7a : ExamSolutions

[spanishemilk]

Thank you so much! You're such a good teacher! :D

[liverpoolfc]

Thanks for this question solution as well, normal distribution is not a strong point, so this really helps. One thing, did you mean decimal places? Only because your answer was already in three significant figures ;)

[sudu]

Thanks for these detail and understanding videos. In the final answer 0.055 is said to be 3s.f but isn't that 2s.f. Or am i wrong.