Ask Question
29 March, 23:31

37 packages are randomly selected from packages received by a parcel service. The sample has a

mean weight of 10.3 pounds and a standard deviation of 2.4 pounds. What is the 95% confidence

interval for the true mean weight, µ, of all packages received by the parcel service?

+1
Answers (1)
  1. 30 March, 00:59
    0
    True mean = mean + / - Z * (SD/sqrt (n))

    Where

    Z = 1.96 at 95% confidence interval

    Mean = 10.3 pounds

    SD = standard deviation = 2.4 pounds

    n = sample size = 37 packages

    Substituting;

    True mean range = 10.3 + / - 1.96 * 2.4/Sqrt (37) = 10.3 + / - 0.77 = 9.53
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “37 packages are randomly selected from packages received by a parcel service. The sample has a mean weight of 10.3 pounds and a standard ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers