CAIE S2 Specimen — Question 3

Exam BoardCAIE
ModuleS2 (Statistics 2)
SessionSpecimen
TopicMeasures of Location and Spread
TypeConfidence intervals for population mean
3 Jagdeesh measured the lengths, \(x\) minutes, of 60 randomly chosen lectures. His results are summarised below.
  1. Calculate unbiased estimates of the population mean and variance.
  2. Calculate a \(98 \%\) confidence interval for the population mean.
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