Posted by Vivian on Saturday, July 28, 2012 at 12:18pm.
At one school, the average amount of time that tenthgraders spend watching television each week is 18.4 hours. The principal introduces a campaign to encourage the students to watch less television. One year later, the principal wants to perform a hypothesis test to determine whether the average amount of time spent watching television per week has decreased. Formulate the null and alternative hypotheses for the study described.

Hypothesis  Statistics  MathGuru, Saturday, July 28, 2012 at 7:36pm
Null:
Ho: µ = 18.4 >population mean is equal to 18.4
Alternative:
Ha: µ < 18.4 >population mean is less than 18.4

Hypothesis  Statistics  sean, Wednesday, April 17, 2013 at 11:50pm
At one high school, the average amount of time tenthgraders spend watching television each week is The principal introduces a campaign to encourage the students to watch less television. One year later, the principal wants to perform a hypothesis test to determine whether the average amount of time spent watching television per week has decreased.
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