Mathematics, 24.03.2020 00:31, Adolfosbaby

Geologist has collected 10 specimens of basaltic rock and 10th specimens of granite. The geologist instructs a laboratory assistant to randomly select 15 of the specimens for analysis. What is the probability of getting exactly 5 granite specimens selected for analysis(a) What is the pmf of the number of granite specimens selected for analysis?
(b) What is the probability that all specimens of one of the two types of rock are selected
for analysis?
(c) What is the probability that the number of granite specimens selected for analysis is
within 1 standard deviation of its mean value?

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Geologist has collected 10 specimens of basaltic rock and 10th specimens of granite. The geologist i...