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Statistics / The Practice of Statistics 5 / Chapter 8 / Problem R8.4

The Practice of Statistics | 5th Edition | ISBN: 9781464108730 | Authors: Daren S. Starnes, Josh Tabor

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Smart kids A school counselor wants to know how smart the students in her school are

Chapter 8, Problem R8.4

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QUESTION:

Smart kids A school counselor wants to know how smart the students in her school are. She gets funding from the principal to give an IQ test to an SRS of 60 of the over 1000 students in the school. The mean IQ score was 114.98 and the standard deviation was 14.80.34 (a) Define the parameter m in this setting. (b) Check the conditions for constructing a confidence interval for m. (c) Construct a 90% confidence interval for the mean IQ score of students at the school. (d) Interpret your result from part (c) in context.

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QUESTION:

Smart kids A school counselor wants to know how smart the students in her school are. She gets funding from the principal to give an IQ test to an SRS of 60 of the over 1000 students in the school. The mean IQ score was 114.98 and the standard deviation was 14.80.34 (a) Define the parameter m in this setting. (b) Check the conditions for constructing a confidence interval for m. (c) Construct a 90% confidence interval for the mean IQ score of students at the school. (d) Interpret your result from part (c) in context.

ANSWER:

Step 1 of 4

(a)

The parameter m in this setting is the true mean IQ score of all students in the school.

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