08/28/20

consider the following box plot
Consider the following box plot.Which quarter has the smallest spread of data?A.5−7B.7−15    C.15−17D.17−18What is that spread?______Which quarter has the largest spread of... more
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08/25/20

Given P(A∪B)=0.7, P(A|B')=0.6, find P(B)
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06/22/20

Need help in Statisitcs
The following table shows the percentage of children in a certain country between the ages of 3 and 5 who are enrolled in preprimary... more
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03/08/20

Probability: machines will work
A particular system is composed of three machine. A, B, and C. The entire system will work as long as any one (or more than one of the three machines works. (The system is WITH backup).P(A works) =... more
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03/06/20

Statistics - CLT
A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 243.5-cm and a standard deviation of 0.8-cm. For shipment, 24 steel rods are bundled... more
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03/03/20

Expected Probability
Assume that the golfer makes 70 percent of putts when they are less than 10 feet and 35 percent of putts when they are 10 feet or longer. The golfer takes 30 putts from less than 10 feet and 77... more
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R

10/18/19

Adding a column to a data.frame?
I have the data.frame below. I want to add a column that classifies my data according to column 1 (`h_no`) in that way that the first series of h_no 1,2,3,4 is class 1, the second series of `h_no`... more
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