leticia stretched for 8 minutes and then jogged around her block serveral times. It takes her 6 minutes to run around the block once. She spent 38 minutes exercising. How many times did leticia jog around the block? Choose two answers: one for the equation that models this situation and one for the correct answer. A. 5 times around the block B. equation 6+8x=38 C.4 times around the block D. equation:8 +6x=38

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.

If /is a line of symmetry, plot the partner points for the ones shown. noch 6 5 4 -3 -2 -1

The weekly amount spent by a company for travel has an approximately normal distribution with mean = $550 and standard deviation = $40. a) what is the probability that the actual weekly expense will exceed $570 for more than 20 weeks during the next year? (note: one year = 52 weeks) b) what is the probability that actual weekly expenses exceed $580 for 10 or more, but 16 or fewer weeks during the next year?