At one school, the average amount of time tenth-graders spend watching television each week is 21.6 hours. the principal introduces a campaign to encourage the students to watch less television. one year later, the principal performs a significance test using α = 0.05 to determine whether the average amount of time spent watching television per week has decreased. the hypotheses are: h0: μ = 21.6 hours ha: μ < 21.6 hours if the p-value = 0.04 and a decision error is made, what type of error is it? explain.