A study conducted by the Garbage Project at the University of Arizona analyzed the contents of garbage discarded by n = 62 households; the households ranged in size from 2 to 11 members. The histogram in Figure 10 shows the total weekly garbage production (in pounds)

for the households in the sample. (The complete study gives the breakdown of garbage by various categories.) The mean for the sample is x = 27.4 pounds and the standard deviation is s = 12.5 pounds. Estimate the population mean for weekly garbage production with a 95%

confidence interval.

Transcribed Image Text:

Frequency 2 4 6 12 10 n=62 households 8 0 20 40 60 Weekly garbage (pounds) Figure 10