The heights of a group of 1000 women are normall distributed. The mean height of the group is 170 cm with a standard deviation of 10 cm. What is the best approximation of the number of women between 170 cm and 180 cm tall?
1) 950
2) 680
3) 340
4) 170

Question

The heights of a group of 1000 women are normall distributed. The mean height of the group is 170 cm with a standard deviation of 10 cm. What is the best approximation of the number of women between 170 cm and 180 cm tall?
1) 950
2) 680
3) 340
4) 170

kropot72 · Answer

Please check the question carefully especially the values for the range ".....between 170 cm and 180 cm tall". With the values as they are none of the choices is close to the answer.

amistre64 · Answer

68% of the data falls within +-1 sd from the mean

amistre64 · Answer

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