1. The principal randomly selected six students to take an aptitude test. Their scores were: 81.1, 78.9, 85.2, 74.2, 77.5, 77.6

Determine a 90% confidence interval for the mean score for all students.

2. The amounts (in ounces) of juice in eight randomly selected juice bottles are: 15.0 15.8 15.0 15.2 15.9 15.7 15.0 15.8

Construct a 98% confidence interval for the mean amount of juice in all such bottles.

Determine a 90% confidence interval for the mean score for all students.

2. The amounts (in ounces) of juice in eight randomly selected juice bottles are: 15.0 15.8 15.0 15.2 15.9 15.7 15.0 15.8

Construct a 98% confidence interval for the mean amount of juice in all such bottles.

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