Mathematics (AS & A Level) · Oct / Nov 2016 · Paper 73 · Question 6
9709
As printed in the paper
The question as text
A variable X takes values 1, 2, 3, 4, 5, and these values are generated at random by a machine. Each value is supposed to be equally likely, but it is suspected that the machine is not working properly. A random sample of 100 values of X, generated by the machine, gives the following results. n = 100 Σx = 340 Σx2 = 1356
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6(i)[6]
6(ii)[2]
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