A Random Sample of 64 Students at a University Showed

question 70

Multiple Choice

A random sample of 64 students at a university showed an average age of 25 years and a sample standard deviation of 2 years.The 98% confidence interval for the true average age of all students in the university is

• A) 20.5 to 29.5.
• B) 24.4 to 25.6.
• C) 23.0 to 27.0.
• D) 20.0 to 30.0.

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