Question

1. 1 Extra Problems (Modified from llowsky p.52 #42, 43, 48, 49) For 3 - 4, identify: a) the population, b) the sample, c) the parameter, d) the statistic, e) the variable 3. Political pollsters are interested in the proportion of people who will vote for legalizing marijuana. A random sample of 1000 eligible voters are selected and 823 state that they will vote for legalizing marijuana. 4. A marketing company is interested in the proportion of people who plan to buy a new car within the next year. Several individuals are randomly selected to participate in the study and the results show that 12% of people plan to buy a new car within the next year.
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Answer #1

3.The population is the all the eligible voters.

The sample is 1000 eligible voters are selected.

Parameter is the proportion of people who will vote for legalising marijuana.

Statistic is 823/1000=0.823

Variable is the proportion.

4. The population is all the people in the particular area.

The sample is randomly selected individuals.

Parameter is the proportion of the people who plan to buy a new car within the next year.

Statistic is 21%=0.21

Variable is the proportion.

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