For each problem, select the best response (a) The scores of adults on an IQ tes

Question

For each problem, select the best response (a) The scores of adults on an IQ test is approximately Normal with mean 100 and standard deviation 15. Corinne scores 118 on such test. Her z-score is about 7.87 0.67 1.2 18 None of the above. (b) To completely specify the shape of a Normal distribution, you must give the five-number summary. the median and the standard deviation. the mean and the median. the mean and the standard deviation. All of the above. (c) Which of these variables is least likely to have a Normal distribution? Income per person for 150 different countries. Lengths of 50 newly hatched pythons. Heights of 100 white pine trees in a forest. None of the above.

Explanation / Answer

Solution:-
a) option C. 1.2

Explanation:- z = (118-100)/15 = 1.2

b) option D.the mean and standard deviation.

c) option A. Income per person for 150 different countries.

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