3 years ago

Quan điểm quản lý của trường phái đưc trị

Mathematics

1 answer:

mario62 [17]3 years ago

7 0

.・。.・゜✭・Srry but which language is this!?

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In western Kansas, the summer density of hailstorms is estimated at about 2.6 storms per 5 square miles. In most cases, a hailst

vovangra [49]

Answer:

Step-by-step explanation:

mean for 5 square miles is 2.6 storms

mean for 9 square miles is $\frac{2.6}{5}\times 8=4.16=4.2\\\\P(r\geq4|r\geq 2)=\frac{P(r\geq 4nr\geq 2 }{P(r\geq 2)}\\\\=\frac{P(r\geq 4)}{P(r\geq 2)}=0.6557\\\\\\P(r\geq 6|r\geq 3)=\frac{P(r\geq 6nr\geq 3 }{P(r\geq 3)}\\\\=\frac{P(3)+P(4)+P(5)}{1-P(r\geq 2)}\\\\=\frac{0.542905}{0.789762}=0.6874$