The problem I am working is the following; please provide step-by-step to obtain solution's.

I am unable to figure (c) out the ANSWER IS ... 7805

There are 5 rotten plums in a crate of 25 plums, How many samples of 4 of the 25 plums contain at least one rotten plum?

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However you seem to be on the right track (looking at your correct answers to a and b), so try to solve it this way.
the number of possibilities to pick AT ...

Solution Summary

The solution explains how to calculate the probabilities of several events.

...Probability 1. Consider the experiment of choosing a whole number at random from between 1 and 10, inclusive. Answers a. Set up a sample space for this ...

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... How large a sample is required ... Finance Total Male 100 150 50 300 Female 100 50 50 200 Total 200 200 100 500 a. What is the probability of selecting a female ...

... b. What is the probability of 60 random chosen person having a ... If a group of 200 students is sampled what is the probability that the school percentage or ...

... units in your population have equal probabilities of being chosen. ... larger populations Disadvantages More time and cost than non-probability sampling. ...

... and probability (simply random, cluster) are two very different types of sampling designs. What are the pros/cons of each design? When and why would you choose...