Mathematics, 12.03.2021 15:20, 8336622

Each year, all final year students take a mathematics exam. It is hypothesised that the population mean score for this test is 80. It is known that the population standard deviation of test scores is 13. A random sample of 23 students take the exam. The mean score for this group is 71. a)Calculate the 90% confidence interval for the population mean test score. Give your answers to 2 decimal places.

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Each year, all final year students take a mathematics exam. It is hypothesised that the population m...