kleine Statistikproblemchen für die Übung...

[Ayal]

na toll, ich hab frage 5 komplett falsch gelesen (keine ahnung, wo meine gedanken hier waren)!


als entschädigung gibts von mir ein quiz:
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Suppose you know that average weight of a certain large group of individuals is 70 kilograms. In a specific subgroup of 50 such individuals, the first person was weighed and was found to be 80 kilograms. What is the expected average weight of a person in this group of 50 persons?

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Tom is 35 years of age. He is intelligent but unimaginative, compulsive, and not very energetic. In school he was good at mathematics but weak in humanities. Rank the following three statements according to the order you consider them most likely.
(a) Tom is an accountant.
(b) Tom plays jazz for a hobby.
© Tom is an accountant who plays jazz for a hobby.
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A coin is tossed and you will receive $10 if the number of the outcomes of ‘heads’ is exactly the same as the number of outcomes of ‘tails’. Which option should you prefer: that for 10 such tosses or 100 such tosses?
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