1. pizza paradise delivers pizza in the local neighborhood using bicycles. the bike delivery person, tommy, uses a bike whose wheels have a radius of 13 in. tommy’s average biking speed is 15 mph. how many minutes would it take for tommy to deliver a pizza to a house that is 4 mi away, and how many revolutions of his bike wheels would this take? (a revolution is one full wheel turn.) use 3.14 to approximate pi. round to the nearest whole number.

Arandomized controlled trial is designed to evaluate the effect of metoprolol in patients with heart failure. while preparing for statistical analysis, the researcher reviews some common types of statistical errors. which of the following statements is true regarding a type i error in a clinical study? a. the study is not significantly powered to detect a true difference between study groups. bthe null hypothesis is true but is rejected in error. c. the null hypothesis is false but is accepted in error. d. type i error is also known as beta and is usually 0.1 or 0.2. e. type i error depends on the study's confidence interval.