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Interpret the interval constructed

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Reference no: EM132008157

Suppose that Syd Water monitors water usage in a suburb and finds that for one summer the average household usage is 408 litres per day. A year later it examines records of a sample of 50 households and finds that there is a daily mean usage of 380 litres with a standard deviation of 25 litres.

1. Construct a 95% confidence interval for the population mean daily water usage in the second summer. Assume the population usage is normally distributed.

2. Interpret the interval constructed in (the question above).

Reference no: EM132008157

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