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Question
3 multiple choice 1 point in 2007, the average time that people spent watching television per day was 107.6 minutes. a psychologist feels that mean time spent watching television per day has decreased since then since people spend more time on their phones and on the internet. if the psychologist would like to test their hypothesis, would it be a two - tailed, left - tailed, or right - tailed test? right - tailed left - tailed two - tailed
The psychologist tests if the mean TV time has decreased (less than the 2007 value). A left-tailed test checks for a parameter being less than a hypothesized value.
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Left-Tailed