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wat does the phrase ,within 1 standard deviation of the mean means????Hey everyone!
I have a question which is confusing me, can anyone answer that for me... explain me the steps to go thru.
In a group of 100 people, 40 own a cat, 25 own a dog and 15 own a cat and a dog. Find the probability that a person chosen at random:
(i) owns a dog or a cat [Answer: 0.5]
(ii) owns a dog or a cat but not both [Answer 0.35]
(iii) owns a dog given he owns a cat [Answer 0.375]
(iv) does not own a cat given that he owns a dog [Answer 0.4]
Thank you