Answer :
Based on the given sample statistics and a 98% confidence level, we can be 98% confident that the true mean mass of the bird seed bags is at least 11.858 kg.
To find a 98% one-sided lower confidence bound on the true mean mass of the bird seed bags, we can use the formula for a confidence interval for the mean in a normal distribution. However, since we are interested in the lower bound, we need to find the value that leaves only 2% of the distribution to the right.
The formula for the lower confidence bound is:
Lower Bound = Sample Mean - Z * (Sample Standard Deviation / √Sample Size)
Given the values: Sample Mean = 12.01 kg, Sample Standard Deviation (s) = 0.57 kg, Sample Size (n) = 103, and for a 98% confidence level, the Z-value (corresponding to the critical value) is approximately 2.33.
Lower Bound = 12.01 - 2.33 * (0.57 / √103) = 11.858 kg
Interpretation: We are 98% confident that the true mean mass of the bird seed bags is at least 11.858 kg.
To know more about confidence level refer here
brainly.com/question/22851322
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