Verify that given is the sample mean

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Suppose health inspectors rate sanitation conditions at restaurants on a five point scale, where a 1 indicates poor conditions and a 5 is excellent.

Based on a sample of restaurants in a large city, the frequencies are found to be f1 = 5, f2 = 8, f3 = 20, f4 = 32, and f5 = 23. What is the sample size, n? Verify that the sample mean is X‾ = 3.7.

Reference no: EM131398472

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