Ryan bought 6 apples and 9 peaches for a total of $9.75. madi bought 4 apples and 5 peaches for $5.75. how much are apples and peaches? define the variables. ▪ write 2 equations that model the situation. ▪ solve the system by either graphing, substitution or linear combinations. ▪ answer the question that was asked. ▪ plug in both answers and check your work

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.