Determining z-scores for actual heights

Reference no: EM1316975

Q1) Assume you were interested in whether smoking (or not smoking) was associated to gender. Let us say you arbitrarily sampled 100 subjects and determined following results:

	Men	Women	Total
Smokers	36	36	72
Non-Smokers	54	84	138
Total	90	120	210

Is there significant evidence at.05 level that smoking and gender are independent?

Q2) Heights of women aged 20 to 29 are approximately normal with mean 64 inches and standard deviation 2.7 inches. Men the same age have mean height 69.3 inches with standard deviation 2.8 inches. Determine the z- scores for woman 6 feet tall and a man 6 feet tall? What the information do z-scores give that actual heights do no?

Reference no: EM1316975

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