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Die volgende steekproef is geneem uit ’n normaal populasie. / The following sample was taken from a normal population.
10 | 8 | 12 | 15 | 13 | 14 | 11 | 6 | 17 | 13 | 10 | 16 |
Gegee dat die populasiestandaardafwyking 3.5 is, is die 90% vertrouensinterval vir die populasie gemiddelde / Given that the population standard deviation is 3.5, the 90% confidence interval for the population mean is