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The probability that a positive two digi...

The probability that a positive two digit number selected at random has its tens digit at least three more than its unit digit is

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0.311
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CENGAGE-PROBABILITY AND STATISTICS-Question Bank
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  7. Let A and B are cvents of an experiment of P(A)=1/4, P(A uu B)=1/2 the...

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  9. If the papers of 4 students randomly đistributed for checking among 7 ...

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  11. If a variable takes the discrete values p+4, p-7/2, p-5/2, p-3, p-2, p...

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  12. The variance of 20 observations is 5 . If eech observation is multipli...

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  13. The mean weight of 9 items is 15 . If one more item is added to the se...

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  14. Consider the frequency distribution of the given pumber If mean of the...

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  15. x1, x2 …. x(34) are numbers such that xi=xi+1-150 forall i in1,2,3, .....

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  16. The mean of 5 observations is 4 and their variancé is 52 . If three of...

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  17. If x1, x2, .. x18 are observations sach the underset(j =1)overset(18)...

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  18. Two cards are drawn without replacement from a wellshuffled deck of 52...

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  19. Let x1, x2 ... xn be n observations sach that sum xi^2=200 and sum xi=...

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  20. If in a frequency distribution, the mean and median are 25 and 26 , th...

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