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1. How many permutations are possible when taking samples of 3 from a population of 20?...

1. How many permutations are possible when taking samples of 3 from a population of 20?
2. How many combinations are possible when taking samples of 3 from a population of 20?

3. a researcher asked 15 samples of size (n=100) about their television use. The mean (M) reported number of television use per hour for each sample is below

5,6,8,10,13,15,20,22,23,25,27,33,39,42,60

What is the best estimate for the population mean? Give actual value

4 Here are the standard deviation for the 15 samples in question 3

1.3, 1.5, 1.2, 2.1, 2.0, 2.3, 2.4, 2.1, 2.2, 2.6, 2.5. ,2.9. ,2.8. ,3.1. ,2.9

What is the best estimate for the population standard deviation ?

math   Statistics-And-Probability   
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Answer #1

n-20 S passible cohen taking Population of 20 Numbes of peomutations samples of 3 forbm 201 C20-3)! 6840 Given, nezo 2 possi

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