Tue 2 NOV moe. alefed. com 71. Check My Understanding 2 Khadija and Muneera are sisters. Together they have 15 dolls. Muneera has 4 times the number of dolls that Khadija has. Write and solve a system of equations to find how many dolls each girl has. Khadija has dolls. Muneera has

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.