Find the proportion. Consider the NAEP scores, which are approximately Normal, N(288, 38). Find the proportion of students who have scores less than 340. Find the proportion of students who have scores greater than or equal to 340. Sketch the relationship between these two calculations using pictures of Normal curves similar to the ones given in Example 1.40 (page 63). 1.

Introductory Statistics: Week 2 4.3: Good and Poor Ways to Experiment ● Experimental unit: The individual whom is studied by the survey. ● Treatment: A condition applied to the subject. ● Explanatory variable: A variable in the study that explains or influences the changes in a response variavle ● Response variable: The variable or interest/what is measured by the study ● Placebo: “dummy” treatment given to the control group so they aren’t aware they aren’t actually receiving the experimental treatment. ● Double Blind: Neither the researchers or the patients know which group is the control group or the experimental group. ● Single Blind: The researchers know which gro