The height of university students is normally distributed with a mean of 175 centimeters and a...
The height of university students is normally distributed with a mean of 175 centimeters and a standard deviation of 8 centimeters. What is the height of the 20% of the tallest students?
a) 175 cms
b) 168.27 cms
c) 181.73 cms
d) 185.2 cms
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The height of university students is normally distributed with a
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The heights of 1000 students are approximately normally distributed with a mean of 174.5 centimeters and a standard deviation of 6.9 centimeters. Suppose 200 random samples of size 25 are drawn from this population and the means recorded to the nearest tenth of a centimeter. Determine (a) the mean and standard deviation of the sampling distribution of X; (b) the number of sample means that fall between 171 and 177 cm.
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QUESTION 9 Students at a university have heights that are normally distributed with a mean of 165 cm and a standard deviation of 5.2 cm. Suppose that the builders decide to make the doorways 170 cm high. What proportion of students will be able to enter the doorways without bending? O 0.9615 O 0.8319 O 0.1681 O None of the above.
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