Find the best answers to your questions with the help of IDNLearn.com's expert contributors. Get the information you need from our community of experts who provide accurate and comprehensive answers to all your questions.
Standardized measures seem to indicate that the average level of anxiety has increased gradually over the past 50 years (Twenge, 2000). In the 1950s, the average score on the Child Manifest Anxiety Scale was μ = 15:1. A sample of N = 16 of today's children produces a mean score of X = 23:3 with SS = 240. Based on this sample, has there been a significant change in the average level of anxiety since the 1950s?
Sagot :
Thank you for contributing to our discussion. Don't forget to check back for new answers. Keep asking, answering, and sharing useful information. Find reliable answers at IDNLearn.com. Thanks for stopping by, and come back for more trustworthy solutions.
