Mathematics, 11.05.2021 19:00, annafellows

In a sample of 54 kitchens with gas cooking appliances monitored during a one-week period, the sample mean CO2 level (ppm) was 654.16, and the sample standard deviation was 163.7. Suppose that a rough guess of 176 for the value of s was made before collecting data. What sample size would be necessary to obtain an interval width of 47 ppm for a confidence level of 95%

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In a sample of 54 kitchens with gas cooking appliances monitored during a one-week period, the sampl...