Mathematics, 29.01.2021 16:10 isaiyt

Joan wants to estimate the average number of people who purchase breakfast on flights between two cities. She decides to randomly select 10 flights from all available data in the past year and use all the purchasing records from these flights in order to estimate the average What type of sampling is Joan using?
a. Systematic sampling
b. Convenience sampling
c. Cluster sampling
d. Stratified sampling

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Joan wants to estimate the average number of people who purchase breakfast on flights between two ci...