3) A national sports governing body wants to determine the percentage of active females, ages 15 and older, who participate in ice hockey. The national body would like to be accurate within 2.5 percentage points with 96% confidence. a) How large a sample would be required? b) If it is found that 12.2% of active females participate in ice hockey, find the 95% confidence interval for the true proportion of active females who participate in ice hockey.

3) A national sports governing body wants to determine the percentage of active females, ages 15 and older, who participate in ice hockey. The national body would like to be accurate within 2.5 percentage points with 96% confidence. a) How large a sample would be required? b) If it is found that 12.2% of active females participate in ice hockey, find the 95% confidence interval for the true proportion of active females who participate in ice hockey.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 30PPS

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