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Back to 8.3 A Population Proportion

8.3 Exercise 13

Avg difficulty 2.5

Use the following information to answer the next two exercises: Marketing companies are interested in knowing the population percent of women who make the majority of household purchasing decisions.

If it were later determined that it was important to be more than 90% confident and a new survey were commissioned, how would it affect the minimum number you need to survey? Why?

OpenStax Introductory Statistics 2e, 8.3 A Population Proportion, exercise 13

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Adapted from Introductory Statistics 2e © 2023 Rice University. Licensed under CC BY 4.0. Source: Introductory Statistics 2e. Imported at revision 50ec917.