Data were collected on 100 students regarding their class and major. The data are summarized in...

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Question

Data were collected on 100 students regarding their class and major. The data are summarized in...

Data were collected on 100 students regarding their class and major. The data are summarized in the following contingency table:

Major/class	Sophomore	Junior	Senior	Total
Undeclared	19	5	6	30
Business	5	17	16	38
Science	5	6	21	32
Total	29	28	43	100

.

What is the probability of randomly selecting an undeclared student given that the student is a senior?

		0.30
		0.14
		0.73
		0.43

math Statistics-And-Probability

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Answer 1

Answer #1

Total senior students =43

P(undeclared | senior) = P(undeclared and senior)/P(senior)

= 6/43 =0.1395

So the answer is 0.14 (Option B) (rounded to 2 decimal places)

Please comment if any doubt. Thank you

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Answer 2

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