Acommunity ride offers a short 5.7 ride for children and families. the short ride followed by a long 5 2/3 times as long as the short ride, for adults. if a woman bikes the short ride with her children and then the london ride with her friends, how many miles does she ride altogether.

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.