Suppose that you want to estimate the mean monthly gross income of all households in your local comm
Question: Suppose that you want to estimate the mean monthly gross income of all households in your local community. You decide to estimate this population parameter by calling 150 randomly selected residents and asking each individual to report the households monthly income. Assume that you use the local phone directory as the frame in selecting the households to be included in the sample. What are some possible sources of error that might arise in your effort to estimate this population mean?
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