Q.2 A manufacture of cell phone batteries wants to estimate the useful life of it's battery (in thousand of hours.) The estimate is the be within 0.10 (100) hours. Assume 1 95 percent level of confidence and that the standard deviation of the useful life of the battery is 0.90 (900 hours). Determine the required sample size.

MATLAB: An Introduction with Applications
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Q.2 A manufacture of cell phone batteries wants to estimate the useful life of it's
battery (in thousand of hours.) The estimate is the be within 0.10 (100) hours.
Assume 1 95 percent level of confidence and that the standard deviation of the
useful life of the battery is 0.90 (900 hours). Determine the required sample size.
Transcribed Image Text:Q.2 A manufacture of cell phone batteries wants to estimate the useful life of it's battery (in thousand of hours.) The estimate is the be within 0.10 (100) hours. Assume 1 95 percent level of confidence and that the standard deviation of the useful life of the battery is 0.90 (900 hours). Determine the required sample size.
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