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Intro to Stat_Part_2

# Intro to Stat_Part_2 - 20 CHAPTER 1 SAMPLING AND DATA a...

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20 CHAPTER 1. SAMPLING AND DATA a. Population b. Sample c. Parameter d. Statistic e. Variable f. Data Exercise 1.11 (Solution on p. 26.) A marketing company is interested in the proportion of people that will buy a particular product. Define the following in terms of the study. Give examples where appropriate. a. Population b. Sample c. Parameter d. Statistic e. Variable f. Data Exercise 1.12 Airline companies are interested in the consistency of the number of babies on each flight, so that they have adequate safety equipment. Suppose an airline conducts a survey. Over Thanksgiving weekend, it surveys 6 flights from Boston to Salt Lake City to determine the number of babies on the flights. It determines the amount of safety equipment needed by the result of that study. a. Using complete sentences, list three things wrong with the way the survey was conducted. b. Using complete sentences, list three ways that you would improve the survey if it were to be repeated. Exercise 1.13 Suppose you want to determine the average number of students per statistics class in your state. Describe a possible sampling method in 3 – 5 complete sentences. Make the description detailed. Exercise 1.14 Suppose you want to determine the average number of cans of soda drunk each month by persons in their twenties. Describe a possible sampling method in 3 - 5 complete sentences. Make the description detailed.

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