Question: Each year, all final year students take a mathematics exam. It is hypothesised that the population mean score for this test is 85. It is

Each year, all final year students take a mathematics exam. It is hypothesised that the population mean score for this test is 85. It is known that the population standard deviation of test scores is 18.

A random sample of 32 students take the exam. The mean score for this group is 76.

You may find thisstandard normal tableuseful throughout the following questions.

Calculate the 95% confidence interval for the population mean test score. Give your answers to 2 decimal places.

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