A large group of students took a test in Physics and the final grades have a mean of 70 and a standard deviation of 10. If we can approximate the distribution of these grades by a normal distribution, A. what percent of the students scored higher than 65 but lesser than 90? 47.72% 28.57% 19.15% 66.87% B. what percent of the students should pass the test (greater than 60)? 84.13% 0.8314 34.13% 0.3143 C. In a recent study, the Centers for Disease Control and Prevention reported that diastolic blood pressures of adult women in the United States are approximately normally distributed with mean 80.5 and standard deviation 9.9. What proportion of women have blood pressure between 75 and 90? 0.4763 0.1192 0.3486 0.5438
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A large group of students took a test in Physics and the final grades have a
A. what percent of the students scored higher than 65 but lesser than 90?
47.72%
28.57%
19.15%
66.87%
B.
what percent of the students should pass the test (greater than 60)?
84.13%
0.8314
34.13%
0.3143
C.
In a recent study, the Centers for Disease Control and Prevention reported that diastolic blood pressures of adult women in the United States are approximately
0.4763
0.1192
0.3486
0.5438
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