1) The scatter plot shows the amount of rainfall received each year from 2000 - 2008 in Tennessee. Draw the line of best fit for the scatter plot.
2) A scatter plot showing the cost of refrigerators based on their capacity is shown below. The scatter plot has a line of best fit drawn. Predict how much a refrigerator with a capacity of 8 cubic feet would cost. Cost is money, so make sure you use the correct units.
3a) Make a scatter plot for the data presented in the table
3b) Draw the line of best fit on your scatter plot above.

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.