One hundred and twenty (120) students took an exam. Their results are given in the following relative frequency table below: Score Less than 50 50 59 60 69 70 79 80 89 90 100 Relative Frequency 15% 10% 30% 25% 15% 5% How many students received at least a 70 on this exam?

Which value of c would make he following expression completely factored? 8x+cy

A.s.a.! similarity in right triangles, refer to the figure to complete this proportionc/a = a/? a.) cb.) hc.) rd.) s

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.