Anita earns 60 points every time she shops at a grocery store. She needs a total of 2580 points to receive a free prize. so far, she has earned 480 points. How many times will Anita have to shop at the grocery store in order to earn the additional points she needs for a free prize?

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.