Move the seed slider to select a different version of the problem.[br]Answer parts (a), (b) and (c).[br][br]Click on the check boxes to see the answer to each part.

A version of this problem will be on the first test and [br]on the final exam.[br][br]Measurement variables result from measuring or counting, [br]Categorical variables are not measurement variables.[br]Discrete measurement variables have gaps between their [br]possible values. Continuous measurement variables have [br]no gaps between their possible values.[br]An observational study records observations or [br]measurements of subjects in a natural setting.[br]An experiment records measurements or observations[br]of subjects in a controlled setting.[br][br]These problems are based on problems 13 through 28 on[br]pages 21 and 22, and problems 5 through 8 on page 32 [br]of Mario F. Triola, "Elementary Statistics", 12th edition, [br]Pearson Education, Inc. 2014.[br][br]Updated June 25, 2013 and July 23, 2013.