(2) According to the stem leaf diagram, there are 8 tall people and 8 non-tall people 12.
∴ Among the 5 people selected by stratified sampling, there are 5×820=2 people in group A and 5× 1220=3 people in group B.
Then the probability that there are at least 1 people in Team A is p =1-C23C25 = 710 ... (6 points).
(3) According to the problem, unit B has only three tall people, so the possible values of ξ are 0, 1, 2, 3;
Therefore, p (zeta = 0) = C35c38 =1056, p (zeta =1) = C25c13c38 = 3056, and p (zeta = 2) = c/kloc-.
P(ξ=3)=C33C38= 156，
The distribution list of ξ is:
ξ 0123p1056 30561556156e ξ = 0× I liked it and stepped on it. What's your comment on this answer? Put away comments//high quality or satisfaction or special types or recommended answers dottimewindow.iperformance & window.iperformance.mark ('c _ best',+newdate); Lawyer recommendation service: If your problem has not been solved, please describe your problem in detail and provide free professional consultation through Baidu Law Professional Edition. Other similar questions 2013-07-013 volunteer charity activities in dongguan 20 10-04-25 I wonder where there are volunteers in Zhuhai. 4620 18-04-20 What is the significance of volunteers participating in social welfare activities? 552007-09-29 How to become volunteers in Zhuhai 1520 13-07-23 Are there more migrants in Shenzhen and Guangzhou this year than last year? How many foreign countries are there in Zhuhai, Guangdong? 1020 10-06-30 How can I join a volunteer in Zhuhai? 262013-12-142013 is it effective to recruit volunteers for public welfare activities on campus? What events are there at Zhuhai Circuit on September 20th13-09-062013 and June 10? 12 recommended to you: especially F.context('cmsRight', [{'URL':'/d01373f082025aaf51aa256e9edab64034f/kloc-0. x-BCE-process = image % 2f resize % 2Cm _ lfit % 2Cw _ 450% 2Ch _ 600% 2c limit _ 1% 2f quality % 2Cq _ 85% 2f format % 2Cf _ auto '，' contractId':'A24KA00562 '，}，{ ' URL ':/s？ word = % E6 % AC % A7 % E6 % B4 % B2 % E6 % 9D % AF & sa = searchpromo _ ozb _ zhidao _ tuijian '，' src ':'/3 BF 33 a 87 e 950352 AAF 5 df 4954 143 fbf2b 2 1 18 b6b？ x-BCE-process = image % 2f resize % 2Cm _ lfit % 2Cw _ 450% 2Ch _ 600% 2c limit _ 1% 2f quality % 2Cq _ 85% 2f format % 2Cf _ auto '，' contractId ':' '，}])； Is Huaqiang North's second-hand mobile phone reliable? Why is the cost of cancer treatment getting higher and higher? What impact will the "network toilet" have? The price of electric cars has dropped many times. Is the quality guaranteed? I recommend f.context ('recbrand', [{"img": "\/86D6277F9E2F07083523F69DFB 24B 899A901F20d? x-BCE-process = image % 2f resize % 2Cm _ lfit % 2Cw _ 450% 2Ch _ 600% 2c limit _ 1% 2f quality % 2Cq _ 85% 2f format % 2Cf _ auto "，" url":"/hm.js？ 6859 ce 5a af 00 FB 00387 e 6434 E4 FCC 925 "； var s = document . getelementsbytagname(" script ")[0]； s.parentNode.insertBefore(hm，s)； })(); window . TT = 1720035745；