Q1. Identify the incorrect statement below. Statistics is the study in which А. data is collected and analysed. B. mathematical tools are used to make forecasts. C. predictions about future events can be made with certainty. D. the risk of adverse outcomes can be managed. www O A. A О В. В С. С O D. D

What is the TWO SOURCES OF VARIABILITY?

13. What is the Relative Risk for these data?

E Question Help In a clinical trial of 2150 subjects treated with a certain drug, 30 reported headaches. In a control group of 1643 subjects given a placebo, 26 reported headaches. Denoting the proportion of headaches in the treatment group by p, and denoting the proportion of headaches in the control (placebo) group by pe, the relative risk is p/p. The relative risk is a measure of the strength of the effect of the drug treatment. Another such measure is the odds ratio, which is the ratio of the odds in favor of a headache for the Pi/ (1-Pt) treatment aroun to the odds in favor of a headache for the control (nlacebo) aroup found hy evaluatina. Find the relative risk for the headache data. The relative The relative risk = (Round to three decimal places as needed.) Enter your answer in the answer box and then click Check Answer. Clear All Check Answer 2 remaining 12:04 PM 10/29/2020 耳| @

or each predictor variable, state the P-value and determine whether the predictor variable is significant in explaining delivery charges.   Predictor variables P-value Significant in explain   Delivery charges   Distance .................. ..............   Weight .................. ..............   Boxes ............... .................