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Blooms. Lilies usually bloom in mid to late summer. Stargazer lily plants produce 4 to 12 flowers on each stalk, often in late July to early August. Flowers typically last about 1 to 3 weeks, but new blooms may appear through September.targazer, an oriental hybrid of lily (Lilium spp.), grows well in U.S. Department of Agriculture plant hardiness zones 8 and 9, usually reaching 2 to 4 feet high.
Question. The life in hours of a 75-watt light bulb is known to be normally distributed with sigma=25 hours. A random sample of 20 bulbs has a mean life of X-bar=1014 hours.a) construct a 95% two-sided confidence interval on the mean life.uestion. The life in hours of a 75-watt light bulb is known to be normally distributed with sigma=25 hours. A random sample of 20 bulbs has a mean life of X-bar=1014 hours.