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Mathematics (9709) 1402/02/10

Paper 7 May/June 2011 MATHEMATICS (9709/73) A Levels

CIE AS & A Level Mathematics (9709) شهریور 2011
شامل مباحث: Paper 6: Probability & Statistics 2
  تعداد سوالات: 7
  سطح دشواری: متوسط
  شروع: آزاد
  پایان: آزاد
  مدت پاسخگویی: 75 دقیقه

Paper 7 May/June 2011 MATHEMATICS (9709/73) A Levels
پیش نمایش صفحه اول فایل
نوع: Paper 3
ثبت شده در 10 اردیبهشت 1402
  

In the past, the number of house sales completed per week by a building company has been modelled by a random variable which has the distribution $Po\left( {0.8} \right)$. Following a publicity campaign, the builders hope that the mean number of sales per week will increase. In order to test at the 5% significance level whether this is the case, the total number of sales during the first 3 weeks after the campaign is noted. It is assumed that a Poisson model is still appropriate.