设 [tex=6.286x1.286]KVoy4dOWnNwvy9BLl7knKSUHAldMrC59azuLEDBz4CI1JJUsYkwe2hu3egUgR5iv[/tex] 是取自标准正态总体 [tex=3.0x1.286]+7PS7hfDMyAfFM/Myj6+2w==[/tex] 的一个样本, [tex=1.071x1.286]8wtfUF0L5fpTSa30/FBLZw==[/tex] 为样本方差,求(1) [tex=6.643x1.286]TYWtdaPDe7td9kvd24gAvHCtPVDMveYpZxD5FtWJGAy3kNxKc76yJj5/jVrjrroP[/tex] . (2) [tex=14.929x2.357]mL7pI0vl+8fSeRujBnJJplzUCitrQHJvxVB0HW/2hv1vE7JMp5a4LkQ92Ox+gMWyH7UMNgDHOk9DdaucWrZoqs79/YFq4BMCohfBe7ApIks=[/tex] .
设 [tex=6.286x1.286]KVoy4dOWnNwvy9BLl7knKSUHAldMrC59azuLEDBz4CI1JJUsYkwe2hu3egUgR5iv[/tex] 是取自标准正态总体 [tex=3.0x1.286]+7PS7hfDMyAfFM/Myj6+2w==[/tex] 的一个样本, [tex=1.071x1.286]8wtfUF0L5fpTSa30/FBLZw==[/tex] 为样本方差,求(1) [tex=6.643x1.286]TYWtdaPDe7td9kvd24gAvHCtPVDMveYpZxD5FtWJGAy3kNxKc76yJj5/jVrjrroP[/tex] . (2) [tex=14.929x2.357]mL7pI0vl+8fSeRujBnJJplzUCitrQHJvxVB0HW/2hv1vE7JMp5a4LkQ92Ox+gMWyH7UMNgDHOk9DdaucWrZoqs79/YFq4BMCohfBe7ApIks=[/tex] .
1