1)There are teo boxes. One with 6 balls number 1-6 and one with seven numbered 1-7. If they are thoroughly shaken and ball is drawn from each, what is the probability that
(a) Both will be 1's
(b) Exactly one of the will be a 2
(c) Both will be even
(d) Exactly one of them will be even?
(e) At least one of them will be even
Here what is the sample space? I have doubt in that...
2)Rachel scored 456 on the national college enterance exam for which the mean is 500 with standard deviation 50. Raymond scored 25 on the BAt testm which has a mean of 30 with a standard deviation of 6. If Hudson college weighs these two examinations equally, which student has the best chance of being admitted to Hudson?
3)If a variable is normally distributed, aproximatley what percentage of its values will lie more than 2 standard deviations away from teh mean? What percentage will lie more htan 1 standard deviation above the mean?
Thanks
2006-11-12
02:15:52
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3 answers
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asked by
magt_g
1
in
Science & Mathematics
➔ Mathematics