Fiji has more than 330 islands and 110 are permantley inhabiited. A reseracher wants to estimate the average annual living expenses for the residents of Fiji. She randomly selected one of the permanelty inhabited islands and then collected that data for the annual living expenses for all residents. Which of the smapling plan: simple random sampling, stratified random sampling or clusted sampling did the researcher use?
b) Fiji has more than 330 islands and 110 are permantley inhabiited. A reseracher wants to estimate the average annual living expenses for the residents of Fiji. She randomly selected one of the permanelty inhabited islands and then collected that data for the annual living expenses for all residents. Which of the smapling plan: simple random sampling, stratified random sampling or clusted sampling did the researcher use?
c) a study of 100 randomly selected stores revealed that 39% of ampled stores used online sites for selling their products.
i) estimate the true proportion of stores that use online sites for selling their products with 95% confidence.
ii) if there are 10,000 stores in a city what would be the min and max number of stores expected to sell their products online?
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