1. Today’s local newspaper lists 27 stocks “of local interest.” Of these stocks, eleven increased, four...

1. Today’s local newspaper lists 27 stocks “of local interest.” Of these stocks, eleven increased, four decreased and twelve remained unchanged yesterday. If we decide to buy three of the stocks, what is the likelihood that all three increased yesterday?

2. You must select a committee of 6 from 28 students. How many different committees can be formed?

3. A survey of 538 students asked: What is your favorite winter sport? And, what type of college do you attend? The results are summarized below:

	Favorite Winter Sport
College Type	Snowboarding	Skiing	Ice Skating	Total
Junior College	57	52	70	179
Four-Year College	61	73	44	178
Graduate School	41	45	75	161
Total	159	170	189	518

Using these 518 students as the sample, a student from this study is randomly selected.

What is the probability of selecting a student whose favorite sport is snowboarding and attends a four-year college?

a.

If a graduate student is selected, what is the probability that the student prefers skiing?

b.

Expert Solution

for the first two problems we use the concept of combinations

orchestra answered 1 year ago

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1. Today’s local newspaper lists 27 stocks “of local interest.” Of these stocks, eleven increased, four...

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