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From a set of n people, a committee of size j, j<n, is to be chosen, and then a subcommittee of size i, i < j, is to be chosen. Derive a combinatorial identity for the number of subcommittees and subcommittees by
(a) looking at the number of subcommittees first; then
(b) looking at the number of committees first.
Prove your identity algebraically.
What is the estimated increase in the interval of time until the next wruption that corresponds to an increase of 60 seconds in the duration?
A study regarding the relationship between age and the amount of pressure sales personnel feel in relation to their jobs revealed the following sample information.
If not what would be a better testing strategy? Could you form a Null Hypothesis or an Alternative Hypothesis? If yes, what would they be.
Iif the sample consits of 16 scores, is the sample mean sufficient to conclude that the treatment has a significant effect? use a two tailed test with .05.
The 7th degree polynomial x^7 - 3x^6 - 7x^4 + 21x^3 - 8x + 24 has a factor (x - 3). Divide x^7 - 3x^6 - 7x^4 + 21x^3 - 8x + 24 by x - 3 and thus:
given that z is a standard normal random variable what is the value of z to the left of z
Suppose that lifetimes of such mice are normally distributed with standard deviation of 6 months, determine the probability that given mouse will live?
Beanie Babies are toy stuffed animals that have become valuable collector's items. Beanie World Magazine provided the information on 50 Beanie Babies given in beanie.xls.
There are two telephone lines A and B. Let E1 be the event that line A is being used and E2 be the event that line B is being used
If the manufacturer's claim is true, what is the probability that the claim will be rejected?
Select the level of significance, and determine critical, ZCR value.
Authorized persons from a facility containing classified information. The device will ?erroneously admit 1 in 10,00,000 unauthorized persons. Assume that 95% of those who ?
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