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Which of the following credit scores will most likely get you the least expensive interest rate on a car loan

The double-blind procedure is most for a. random assignment b. the placebo effect c. operational definitions replication d. standard deviations

Without stratospheric ozone, which of the following would most likely occur? i. smog over major cities would be greatly reduced. ii. farms would produce surplus crops because of increased photosynthesis. iii. uv radiation would damage phytoplankton and reduce populations of aquatic consumers. i only ii only iii only i and ii i and iii