1. The mean height of the students in Grade 1 section Newton is 125 cm and the standard deviation is 3.5 cm. Assuming the heights are normally distributed, what percent of the height is: i. greater than 135 cm? ii. less than 128 cm?

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1. The mean height of the students in Grade 1 section Newton is 125
cm and the standard deviation is 3.5 cm. Assuming the heights are
normally distributed, what percent of the height is:
i. greater than 135 cm?
ii. less than 128 cm?
2. Suppose SAT scores roughly follows a normal distribution in the U.S.
population of college-bound students (with range restricted to 200-
800), and the average math SAT is 525 with a standard deviation of 60,
then solve for the area under the curve of the following interval of
scores between :
i. 370 and 625
ii. 400 and 600
ii. 350 and 650
Transcribed Image Text:1. The mean height of the students in Grade 1 section Newton is 125 cm and the standard deviation is 3.5 cm. Assuming the heights are normally distributed, what percent of the height is: i. greater than 135 cm? ii. less than 128 cm? 2. Suppose SAT scores roughly follows a normal distribution in the U.S. population of college-bound students (with range restricted to 200- 800), and the average math SAT is 525 with a standard deviation of 60, then solve for the area under the curve of the following interval of scores between : i. 370 and 625 ii. 400 and 600 ii. 350 and 650
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