SOLUTION: 3. A baseball team has 9 players, all of whom have equal skill in all positions. The team needs 3 outfielders. Assuming order is not important, how many possible combinations of ou

Question 144090: 3. A baseball team has 9 players, all of whom have equal skill in all positions. The team needs 3 outfielders. Assuming order is not important, how many possible combinations of outfielders are there? Put your formula/answer in cell A3.

4. The results of a recent survey indicate that 68% of households in the United States have internet access. If you randomly select 5 households, what is the probability that exactly 3 households will have internet access? Put your answer in cell A4. What is the probability that fewer than 3 households have internet access? Put your answer in cell A5. What is the probability at least three of them have internet access? Put your answer in cell A6. (False returns �exactly� amount�, whereas �true� returns the cumulative amount.)

5. Find the area under the standard normal curve to the left of z = -1.01. Put your answer in cell A7.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
3. A baseball team has 9 players, all of whom have equal skill in all positions. The team needs 3 outfielders. Assuming order is not important, how many possible combinations of outfielders are there? Put your formula/answer in cell A3.
Ans: 9C3 = 9*8*7/1*2*3 = 3*4*7 = 84
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Comment: I am using a TI calculator to get the following results.
You may get slightly different results using EXCEL.
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4. The results of a recent survey indicate that 68% of households in the United States have internet access.
If you randomly select 5 households, what is the probability that exactly 3 households will have internet access?
Ans: 5C3(0.68)^3(0.32)^2 = 0.32197...
Put your answer in cell A4.
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What is the probability that fewer than 3 households have internet access? Put your answer in cell A5.
Ans: binomcdf(5,0.68,2) = 0.190526...
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What is the probability at least three of them have internet access? Put your answer in cell A6. (False returns �exactly� amount�, whereas �true� returns the cumulative amount.)
Ans: 1 - binomcdf(5,0.68,2) = 0.80947....
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5. Find the area under the standard normal curve to the left of z = -1.01. Put your answer in cell A7.
Ans: P(-10 < z < -1,01) = normalcdf(-10,-1.01) = 0.15624...
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Cheers,
Stan H.

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