Construct a 99% confidence interval for life expectancy of a new GE light bulb:<span> n = 64 Xbar = 750 s.d. = 20 Critical z value at 99% confidence = 2.576 margin of Error, E = 2.576*20/√64 = 6.44<span>99% confidence interval for life expectancy of a new GE light bulb = (Xbar - E; Xbar + E) = (743.56; 756.44)</span></span>
t would be graph: B (0,4)
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