Paper 7 October/November 2006 MATHEMATICH (9709/7) A Levels
لطفا برای اطمینان از عملکرد و تجربه بهتر از مرورگرهای مدرن و به روز مانند کروم یا فایرفاکس استفاده کنید.

a) Give a reason why sampling would be required in order to reach a conclusion about
(i) the mean height of adult males in England,
(ii) the mean weight that can be supported by a single cable of a certain type without the cable breaking.
b) The weights, in kg, of sacks of potatoes are represented by the random variable $X$ with mean $\mu $ and standard deviation $\sigma $. The weights of a random sample of 500 sacks of potatoes are…