What is the value of the mean? 1 3. P(X=x) 0.15 0.20 0.15 0.50 Answer: MAR

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A: Givensample size(n)=20mean(x)=20standard deviation(s)=1.2confidence interval = 90%

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A: The probability is 24.4% .   Explanation:-    

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A: Given probability distribution is :  X 1 2 3 4 5 P(X) 0.67 0.13 0.09 0.01 0.10  

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Q: 6. Find the mean of the following series : Marks No. of Students Below 10 4 10-20 6. 20-30 10 30-40 ...

A: Solution is given in the attached picture:

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A: Solution is given: