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A study of cats and dogs found that 30 of 60 cats and 11 of 40 dogs slept more than 10 hours per day. At the level of significance, is there sufficient evidence to conclude that a difference exists...

A gardener buys a package of seeds. Seventy-six percent of seeds of this type germinate. The gardener plants 110 seeds. Approximate the probability that fewer than 77 seeds germinate.

A lot consists of 15 articles of which 8 are free of defects ,4 have minor defects and 3 have major defects.Five articles are selected at random without replacement find probability that at most one...

There are 40 people on the Western Dubuque faculty. Of these 40, 15 are men and 25 are women. Use this information to answer the following questions. a. A committee of 8 is to be selected...

A bag contains 20 marbles: 5 yellow, 2 white, 3 blue, and 10 green. If 4 are selected at random, find the probability that a.2 are yellow, with replacement   b. 2 are yellow, without...

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