Best Computers, Inc., sells computers and computer parts by mail. A sample of 25 recent orders showed the mean time taken to ship out these orders was 70 hours with a sample standard deviation of 14 hours. Assuming the population is normally distributed, the 99% confidence interval for the population mean is:

[填空题] OCLC，Online Computer Library Center，Inc.，即（），总部设在美国的俄亥俄州，是世界上最大的提供文献信息服务的机构之一，它是一个非赢利的组织，以推动更多的人检索世界上的信息、实现资源共享并减少使用信息的费用为主要目的。

[单选题]So involved with their computers( )that leaders at summer computer camps of

[单选题]So involved with their computers( )that leaders at summer computer camps of

[单选题]Kamp, Inc. sells specialized bicycle shoes. At year-end, due to a sudden in

[单选题]Modern computers based on ( ) are millions to billions oftimes more capable

[单选题]Computers are very important to modern life．Many people think that in the f

[单选题]Computers are very important to modern life．Many people think that in the f

[单选题]Computers are very important to modern life．Many people think that in the f

[单选题]Computers are very important to modern life．Many people think that in the f

[单选题]Computers are very important to modern life．Many people think that in the f