From a box of spruce seeds with the germination of 80%, we randomly select 10 seeds and plant them. Find the median of the random variable: the number of germinating seeds.

Correct answer:

m =  8

Step-by-step explanation:

q=80%=80100=0.8 r=1q=10.8=15=0.2 n=10  n1=(n1)q1(1q)n1=(101)0.81(10.8)1014.096106 n2=(n2)q2(1q)n2=(102)0.82(10.8)1020.0001 n3=(n3)q3(1q)n3=(103)0.83(10.8)1030.0008 n4=(n4)q4(1q)n4=(104)0.84(10.8)1040.0055 n5=(n5)q5(1q)n5=(105)0.85(10.8)1050.0264 n6=(n6)q6(1q)n6=(106)0.86(10.8)1060.0881 n7=(n7)q7(1q)n7=(107)0.87(10.8)1070.2013 n8=(n8)q8(1q)n8=(108)0.88(10.8)1080.302 n9=(n9)q9(1q)n9=(109)0.89(10.8)1090.2684 n10=(n10)q10(1q)n10=(1010)0.810(10.8)10100.1074  n8>ni  m=8

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