A-Level MathematicsYear 2020Q1
2 Answer ALL questions. Write your answers in the spaces provided. 1 The weights at 3 months of age, in kg, of baby girls born in the UK are modelled by the normal distribution N(5.8, 0.742). Rose has recently looked up the weights of a sample of 14 baby girls weighed at 3 months of age in her clinic. The mean weight of the baby girls in her sample is 6.3 kg. (a) Calculate a 95% confidence interval for the mean weight at 3 months of age of baby girls in Rose’s clinic. (3) _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________
Paper Source:9ST0_02_que_20201023.pdf
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Exam Specification Info
This question is part of the UK A-Level Mathematics syllabus. In the actual exam, structured questions typically require linking specific keywords to gain full marks. Applaa helps you drill these topics.
Syllabus levelAdvanced Level (A-Level)
SubjectMathematics
Official MarksVariable (2–6 marks)