853 PM Univ of NC at Charlotte Yesterday 857 AM Verizon Edit

8:53 PM Univ of NC at Charlotte Yesterday 8:57 AM Verizon Edit Find the range, mean, variance, and standard deviation. if P(A) 0.4, P(B)-0.7 and P(An B) 0.3 represent the amount of water in gallons) consumed 24 elephants: 2. Given that events A and B are mutually inclusive, find P (A or B), 3. Use the stem - and- leaf plot to display the following data . The data 33, 45, 34, 47, 43, 48, 35, 69, 45, 60, 46, 51. 41, 66, 60, 41, 32, 40, 44, 39, 46, 33, 33, 53 4. education cost per student ( in thousand of dollars) from The a sample of 10 Liberal Arts Colleges are 22, 26, 19, 20, 20, 18, 21, 17, 19,14. Find the mean, median, and mode . Describe the characteristics / shape of the distribution if: Mean Median Mean Median Mode Mean

Solution

P(AUB) = P(A)+P(B)_P(AB) = 0.08

NOte: This is for general A and B. But when A and B are exclusive, P(AB) =0. There is a mistake in the question.)

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2) stem and leaf plot

4) Statistics:

5) Mean = Median. Symmetric

Mean =Med=mode  Bellshaped and symmetric

Mean<Median<mode -- Left skewed

Otherwise right skewed

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P(getting Head and 2) =  (as they are indepdent, prob multiplied)

P(k and q) =

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P(x<3 or x is odd) = P(x =1,3,5) = 0.5

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x =34 days Z = 0.25

x =30 days Z = -0.75

Answer: Data Set: 33, 45, 34, 47, 43, 48, 35, 69, 45, 60, 46, 51, 41, 41, 66, 60, 32, 40, 44, 39, 46, 33, 33, 53 Basic Statistics: Minimum: 32 Maximum: 69 Count: 24 Sum: 1084 Mean: 45.166666666667 Median: 44.5 Mode: 33 Standard Deviation: 10.428500524448 Variance: 108.75362318841 Stem and Leaf Plot: Stem Leaf 3 2 3 3 3 4 5 9 4 0 1 1 3 4 5 5 6 6 7 8 5 1 3 6 0 0 6 9