Please complete the following:
A. Identify the population and the sample: A survey of 787 small-business managers found that 72% are optimistic about the future of their company.
b. Determine whether the numerical value describes a parameter or a statistic: 19% of a sample of Indiana 9th graders surveyed smoked cigarettes daily.
c. Determine whether the data are qualitative or quantitative and explain your answer: The zip codes of a sample of 350 residents of nursing homes.
d. Identify which sampling technique was used in the study and explain: Law enforcement officials use a radar gun to measure the speed of every tenth vehicle on an interstate.
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