Hypothesis  Statistics
posted by Vivian on .
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.

Null:
Ho: µ = 18.4 >population mean is equal to 18.4
Alternative:
Ha: µ < 18.4 >population mean is less than 18.4 
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.