New research suggests that children often learn coping skills from imaginary friends. In a study of 100
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New research suggests that children often learn coping skills from imaginary friends. In a study of 100 children done at the University of Oregon and reported in Developmental Psychology
(USA Today, December 20, 2004, “‘Pretend’ friends, actual benefits”), 33% of the children still had an imaginary friend at the age of 7. Find the 90%
confidence interval for the true proportion of “success”
for a binomial experiment with n 100 and an observed proportion of 0.33.
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Related Book For
Just The Essentials Of Elementary Statistics
ISBN: 9780495314875
10th Edition
Authors: Robert Johnson, Patricia Kuby
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