According to the geometric probability formula, the probability of getting 5 points and 3 points is13;
p(A)= 13× 13 = 19。
So the probability of a family scoring (5,3) is 19.
(2) Remember that family A won the prize in the game as event B, then the scores that meet the award-winning conditions are (5,5), (5,3), (3,5), * *.
Therefore, p (b) =13x13+13+13 =13,
So the probability of a family winning the prize is 13.
(3) According to (2), the winning probability of each family is 13, and the acceptable value of X is 0, 1, 2, 3, 4, 5.
p(X = 0)= C50( 13)0( 1- 13)5 = 32243，
p(X = 1)= c 5 1( 13) 1( 1- 13)4 = 80243，
p(X = 2)= C52( 13)2( 1- 13)3 = 80243，
p(X = 3)= C53( 13)3( 1- 13)2 = 40243，
P (x = 4) = C54 (13) 4 (1-I have praised 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 problems 20 12-04- 12. As shown in the figure, each turntable is divided into two equal sectors, and two people, Party A and Party B, play games with them and freely rotate the two dials at the same time. If the two hands 620 12-05-24 are turntables as shown in fig. 8, the turntables can rotate freely. In this turntable, it is divided into two areas, A and B. The central angle of the dark area A is 42016-12-01. As shown in the figure, there is a turntable that can rotate freely. As shown in the figure, the two turntables in the figure are divided into five and four sectors, each sector is marked with numbers, and there is also a freely rotating turntable divided into five sectors. The five sectors are numbered 1, -2, 3, -4, 592016-12-01respectively. As shown in the figure, a circular game turntable is divided into six uniform sector areas. When the turntable stops rotating, the number in the area indicated by arrow A is 2065438. The turntable is divided into three sectors with equal area. After rotating the turntable, let it stop freely. One sector is 2013-05-141. As shown in the figure, the turntable is evenly divided into 16 small sectors. Please color some sectors of the turntable in red, so that it can rotate the turntable freely when it stops rotating. & gt recommended for you: F.context('cmsRight', [{'URL':'/d01373f082025aaf511aa256e9edab64034f1a07? 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 ':' '，}])； The price of electric cars has dropped many times. Is the quality guaranteed? What impact will the "network toilet" have? Is Huaqiang North's second-hand mobile phone reliable? Why is the cost of cancer treatment getting higher and higher? 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 = 17 19963 104；