Ehtimolliklar nazariyasi va matematik statistika

Bir xil sharoitda n ta bog‘liqsiz tajribalar o‘tkazilganda A hodisa k marta ro‘y berdi. A hodisaning ro‘y berish nisbiy

k

chastotasi h = — bu hodisaning bitta tajribada ro'y berishi ehti-n
molligi p=F\A) uchun siljimagan va asosli baho bo'lishini ko'rsating.
VI bob bo‘yicha test topshiriqlari
1. Bosh to'plamdan n = 60 hajmli tanlanma olingan:
x,-: 1 3 6 26
n,: 8 40 10 2
Bosh to'plam matematik kutilmasining siljimagan bahosini toping.
A) x = 4 B) x = 2 C) x = 3 D) 3c = 5.
Bosh to'plamdan n = 50 hajmli tanlanma olingan:
x(: 25710
nt: 16 12 814
Bosh to'plam matematik kutilmasining siljimagan bahosini toping.
A) 3c =5,76 B) x =2,74 C) x=3,76 D) 3c =4,75.
n = 20 hajmli tanlanmaning berilgan taqsimoti bo'yicha tanlanma o'rtacha qiymatini toping:
x,: 2560 2600 2620 2650 2700
2 3 10 4 I
x =2621B) x =2742 C) 3c =3761 D) 3c =4275.
n = 41 hajmli tanlanma bo'yicha bosh to'plam dispersiyasi-ning Dr = 3 siljigan bahosi lopilgan. Bosh to'plam dispersiyasi-ning siljimagan bahosini toping.