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Suppose the following table shows the number of colds 7 different people got during the typical cold season based on the number of times they washed they washed their hands per day during the cold season. Calculate the correlation coefficient and interpret its meaning as applied to this problem. In addition, using a hypothesis test determine if the correlation coefficient is statistically different from 0 (i.e. )
# of Times
Wash Hands # of Colds
0 7
1 4
2 3
3 2
4 2
5 3
6 1
Determining the probability that the two choose the same number?
Explain whether the authors used a population or a sample. Explain how this could have affected the results. If a sample was used, was it representative of the entire population? Why or why not?
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If two independent large samples are taken from two populations, the sampling distribution of the difference between the two sample means:
Distinct random variable
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Assume that a hand of 12 cards is dealt from a normal deck of 52 playing cards. What is the probability that of the 12 cards, 3 will be diamonds, 3 will be clubs, 3 will be spades, and 3 will be hearts.
Compare the effectiveness of three methods of teaching (IV). You plan to administer a standardized test (DV measured on an interval scale measuring knowledge acquisition) to the students in three classes with each class using a different teaching ..
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