| Exam Board | CAIE |
|---|
| Module | S2 (Statistics 2) |
|---|
| Year | 2014 |
|---|
| Session | June |
|---|
| Topic | Hypothesis test of a normal distribution |
|---|
2 A die is biased. The mean and variance of a random sample of 70 scores on this die are found to be 3.61 and 2.70 respectively. Calculate a \(95 \%\) confidence interval for the population mean score.