The weight of a product is measured in pounds. A sample of 50 units is taken from a recent production. The sample yielded ![The weight of a product is measured in pounds. A sample of 50 units is taken from a recent production. The sample yielded = 75 lb, and we know that σ<sup>2</sup> = 100 lb. Calculate a 95 percent confidence interval for μ. A) [71.25, 78.75] B) [72.23, 77.77] C) [47.28, 102.72] D) [72.67, 77.33]](https://d2lvgg3v3hfg70.cloudfront.net/TB7056/11ead627_0a88_6193_93a1_8d1cf116dc92_TB7056_11.jpg)
= 75 lb, and we know that σ2 = 100 lb. Calculate a 95 percent confidence interval for μ.
A) [71.25, 78.75]
B) [72.23, 77.77]
C) [47.28, 102.72]
D) [72.67, 77.33]
Correct Answer:
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