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Expert and amateur pianists were compared in a study Maintaining Excellence: Deliberate Practice and Elite Performance in Young and Older

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Expert and amateur pianists were compared in a study “Maintaining Excellence: Deliberate Practice and Elite Performance in Young and Older Pianists” (J. Exp. Psychol. Gen. 1996: 331–340). The researchers used a keyboard that allowed measurement of the force applied by a pianist in striking a key. All 48 pianists played Prelude Number 1 from Bach’s Well-Tempered Clavier. For 24 amateur pianists the mean force applied was 74.5 with standard deviation 6.29, and for 24 expert pianists the mean force was 81.8 with standard deviation 8.64. Do expert pianists hit the keys harder? Assuming normally distributed data, state and test the relevant hypotheses, and interpret the results.

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Calculate the t value using the formula t mean1 mean2 sqrt s1 2 n1 s2 2 n2 where mean1 and mean2 are …View the full answer


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Related Book For  answer-question
Modern Mathematical Statistics With Applications

Modern Mathematical Statistics With Applications

ISBN: 9783030551551

3rd Edition

Authors: Jay L. Devore, Kenneth N. Berk, Matthew A. Carlton

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Question Details
Chapter # 10- Inferences Based on Two Samples
Section: Exercises
Problem: 23
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Question Posted: August 24, 2023 07:13:03
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