stats confidence intervals , statistics homework help

stats confidence intervals , statistics homework help

Ice Cream

You wish to estimate with 95% confidence, the population proportion of U.S adults who say that chocolate is their favorite ice cream flavor. Your estimate must be accurate within5% of the population proportion.

  • (a) No preliminary estimate is available. Find the minimum sample size needed.
  • (b) Find the minimum sample size needed. Using a prior study that found that 28% of U.S adults say that chocolate is their favorite ice cream flavor.
  • (c)Compare the results from parts (a) and (b)

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