Question

Babcock and Marks (2010) review survey data from 2003–2005, and obtained an average of mean = 14 hours per week spent studying by full-time students at four-year colleges in the United States. To determine whether this average has changed in recent years, a researcher selected a sample of n = 5 64 of today’s college students and obtained an average of M = 12.5 hours. If the standard deviation for the distribution is = 5 4.8 hours per week, does this sample indicate a significant change in the number of hours spent studying? Use alpha = .05.

Answer 1

Answer:

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Step-by-step explanation:

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