9. As health commissioner of city A, you have decided to implement a $ 20 million exercise program for elementary school children if there was 95% confidence that the mean resting heart rate in this population was different from 80 beats/min. Using a random sample of 45 elementary school children, the estimated mean heart rate was found to be 86.5 beats/min with a 95% confidence interval from 79.1 to 93.9 beats/min. What is your decision

What is the measure of angle afe? 79 81 91 99

Which function is odd check all that apply a. y=sin x b. y=csc x c. y=cot x d. y=sec x

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)