3. A survey among freshman at a certain university revealed that the number of hours spent studying the week before final exams was normally distributed with a mean of 25 and a standard deviation of 7. What proportion of students studied less than 30 hours? a. Choose the calculator function that would best apply to this problem (circle or highlight). i) Normalcdf ii) invNorm b. Which described scenario best applies to this problem (circle or highlight). i) Regular normal distribution problem ii) Normal distribution using the Central Limit Theorem for Means iii) Normal distribution using the Central Limit Theorem for Proportions c. Write down the entire calculator function that would input into your calculator to solve the problem. (DO NOT COMPUTE)

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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3. A survey among freshman at a certain university revealed that the number of hours spent studying
the week before final exams was normally distributed with a mean of 25 and a standard deviation of
7. What proportion of students studied less than 30 hours?
a. Choose the calculator function that would best apply to this problem (circle or highlight).
i)
Normalcdf
ii)
invNorm
b. Which described scenario best applies to this problem (circle or highlight).
i)
Regular normal distribution problem
ii)
Normal distribution using the Central Limit Theorem for Means
iii)
Normal distribution using the Central Limit Theorem for Proportions
c. Write down the entire calculator function that would input into your calculator to solve the
problem. (DO NOT COMPUTE)
Transcribed Image Text:3. A survey among freshman at a certain university revealed that the number of hours spent studying the week before final exams was normally distributed with a mean of 25 and a standard deviation of 7. What proportion of students studied less than 30 hours? a. Choose the calculator function that would best apply to this problem (circle or highlight). i) Normalcdf ii) invNorm b. Which described scenario best applies to this problem (circle or highlight). i) Regular normal distribution problem ii) Normal distribution using the Central Limit Theorem for Means iii) Normal distribution using the Central Limit Theorem for Proportions c. Write down the entire calculator function that would input into your calculator to solve the problem. (DO NOT COMPUTE)
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