The weather center in Alaska recorded the average temperature for 42 days and prepared the dot plot shown. What was the mean temperature during that period?

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122

Sam is picking fruit from a basket that contains many different kinds of fruit. which set of events is independent?

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.