Essay
THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
The mean household income,in dollars,must be estimated for a town that is divided into three districts.The relevant information is shown in the table.
A 95% confidence interval for the population mean that extends $550 on each side of the sample estimate is required.
-A questionnaire was mailed to 1000 registered municipal voters selected at random.Only 600 questionnaires were returned,and of the 600 returned,450 respondents were strongly opposed to a surcharge proposed to support the city's Parks and Recreation Department.Can the 75% figure be accepted as a valid estimate of the percentage in the city who are opposed to the surcharge?
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The questionnaires that were returned do...View Answer
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