An electrical firm manufactures light bulbs that have a length life with normal distribution, and a standard deviation of σ = 10 hours. A sample of size n = = 100 is obtained, and its sample mean is calculated to be 330 hours. x = Find the 95% confidence interval for the average length life μ. (328.04,331.96) Find the upper 95% bound for the average length life μ. 331.96 notation. ☑ invalid interval Find the lower 95% bound for the average length life μ. 328.04 notation. ☑ invalid interval Give your answer as intervals. Use -∞ and +∞ if needed.

An electrical firm manufactures light bulbs that have a length life with normal distribution, and a standard deviation of σ = 10 hours. A sample of size n = = 100 is obtained, and its sample mean is calculated to be 330 hours. x = Find the 95% confidence interval for the average length life μ. (328.04,331.96) Find the upper 95% bound for the average length life μ. 331.96 notation. ☑ invalid interval Find the lower 95% bound for the average length life μ. 328.04 notation. ☑ invalid interval Give your answer as intervals. Use -∞ and +∞ if needed.

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter13: Probability And Calculus

Section13.2: Expected Value And Variance Of Continuous Random Variables

Problem 10E

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