a) 1. The backpack weight sample mean is 6.375 pounds.
a) 2. The backpack weight sample mean is 6.375 pounds.
a) 3. The backpack weight sample mean is 6.625 pounds.
b) The range of the sample means is between 6.375 and 6.625, which approaches 0.250 pounds, plus or minus.
c) Since the students are using the sample means to estimate the mean backpack weight of their schoolmates, the true statements are A. and D.
The farther the range of the sample means is from O, the less confident they can be in their estimate.
What is a sample mean?
A sample mean is a statistic computed from a sample of data or variables.
The sample mean represents the average value of the sample data.
What is a range in statistics?
The range describes the difference between the largest number and the smallest number.
Thus, based on the range of the sample means, the farther it is from 0, the less confident the students can be in their estimate.
Learn more about sample means and ranges at https://brainly.com/question/15283613
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