A Washington, D.C., think tank announces the typical teenager sent 50 text messages per day in 2013.
Question:
A Washington, D.C., “think tank†announces the typical teenager sent 50 text messages per day in 2013. To update that estimate, you phone a sample of 12 teenagers and ask them how many text messages they sent the previous day. Their responses were:
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At the .05 level, can you conclude that the mean number is greater than 50? Estimate the pvalue and describe what it tellsyou.
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H o 50 H 1 50 Reject H o if t 1796 Reject H o and concl...View the full answer
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Related Book For 
Statistical Techniques in Business and Economics
ISBN: 978-0078020520
16th edition
Authors: Douglas Lind, William Marchal
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