SOLUTION: A sample of 16 students form a large university is taken. The average age in the sample was 22 years with a standard deviation of six years. Construct a 95% confidence interval f

Question 822164: A sample of 16 students form a large university is taken. The average age in the sample was 22 years with a standard deviation of six years. Construct a 95% confidence interval for the average age of the population. assume the population of student ages is normally distributed.
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

 

Hi

The average age in the sample of 16 was 22 years with a standard deviation of six years.

 ME = 

95% confidence interval for the average age of the population. 

  22 - ME <  < 22 + ME

Note:

80%	z = 1.28155

90%	z =1.645

92%	z = 1.751

95%	z = 1.96

98%	z = 2.326

99%	z = 2.576

 

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