Question

The following data are the weights (lbs) of 20 college-age males.

140, 155, 153, 150, 178, 160, 155, 145, 163, 150

141, 169, 179, 176, 157, 153, 184, 160, 145, 185

3).2pts. Can you expect you weigh less than about 50% of the 20 college-age males if you are 165 lbs? why?

a. The following data are the weights (lbs) of 20 college-age males. 140, 155, 153, 150, 178, 160, 155, 145, 163, 150 141, 169, 179, 176, 157, 153, 184, 160, 145, 185 1).5pts. Group the data into the following intervals 140-149, 150-159, 160-169, 170-179, 180-189.. 2). 5pts. Sketch the histogram and tell the shape of the histogram. 3).2 pts. Can you expect you weigh less than about 50% of the 20 college-age males if you are 165 lbs? why? 4).2 pts. What kind of weight (or weight range) should you keep if you want to be in the lower 25%?

4).2pts. What kind of weight (or weight range) should you keep if you want to be in the lower 25%?

Answer 1

1.

	Data						cumulative
lower		upper	midpoint	width	frequency	percent	frequency	percent
140	<	149	145	10	4	20.0	4	20.0
150	<	159	155	10	7	35.0	11	55.0
160	<	169	165	10	4	20.0	15	75.0
170	<	179	175	10	3	15.0	18	90.0
180	<	189	185	10	2	10.0	20	100.0
					20	100.0

2. The graph is:

Histogram Percent Data

3. Yes, because the data is skewed-right.

4. 140-149