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According to an AP Ipsos poll June 15 2005 42 of
According to an AP-Ipsos poll (June 15, 2005), 42% of 1001 randomly selected adult Americans made plans in May 2005 based on a weather report that turned out to be wrong.

a. Construct and interpret a 99% confidence interval for the proportion of Americans who made plans in May 2005 based on an incorrect weather report.

b. Do you think it is reasonable to generalize this estimate to other months of the year? Explain.

According to an AP Ipsos poll June 15 2005 42 of