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Question 4 Use your TI83 (or Excel): A normally distributed population of IQ scores has a...

Question 4 Use your TI83 (or Excel): A normally distributed population of IQ scores has a mean of 99 and a standard deviation of 17. Determine the IQ at the 2nd percentile. Round to the nearest whole number

QUESTION 5 Use your TI83 (or Excel): A normally distributed population has a mean of 271 and a standard deviation of 28. Determine the value of the 90th percentile. Round to the nearest whole number

QUESTION 6 Use your TI83 (or Excel): A normally distributed population has a mean of 98.11 and a standard deviation of 0.22. Determine the value of the third quartile. Round to the nearest hundredth

QUESTION 7 Use your TI83 (or Excel): A normally distributed population has a mean of 98.37 and a standard deviation of 0.39. Determine the value of the first quartile. Round to the nearest hundredth

QUESTION 8 Use your TI83 (or Excel): A normally distributed population has a mean of 110 and a standard deviation of 19. Determine the value of the third quartile. Round to the nearest tenth

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Solution:

Question 4 Use your TI83 (or Excel): A normally distributed population of IQ scores has a mean of 99 and a standard deviation of 17. Determine the IQ at the 2nd percentile.

Answer: The excel function is:

QUESTION 5 Use your TI83 (or Excel): A normally distributed population has a mean of 271 and a standard deviation of 28. Determine the value of the 90th percentile.

Answer: The excel function is:

QUESTION 6 Use your TI83 (or Excel): A normally distributed population has a mean of 98.11 and a standard deviation of 0.22. Determine the value of the third quartile.

Answer: The excel function is:

QUESTION 7 Use your TI83 (or Excel): A normally distributed population has a mean of 98.37 and a standard deviation of 0.39. Determine the value of the first quartile.

Answer: The excel function is:

QUESTION 8 Use your TI83 (or Excel): A normally distributed population has a mean of 110 and a standard deviation of 19. Determine the value of the third quartile

Answer: The excel function is:


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