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eBook The Food Marketing Institute shows that 15% of households spend more than $100 per week...

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The Food Marketing Institute shows that 15% of households spend more than $100 per week on groceries. Assume the population proportion is p = 0.15 and a sample of 800 households will be selected from the population. Use z-table.

  1. Calculate ( ), the standard error of the proportion of households spending more than $100 per week on groceries (to 4 decimals).

  2. What is the probability that the sample proportion will be within +/- 0.02 of the population proportion (to 4 decimals)?

  3. What is the probability that the sample proportion will be within +/- 0.02 of the population proportion for a sample of 1,600 households (to 4 decimals)?

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Rahul Sunny answered 1 year ago
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