SOLUTION: Suppose 10% of new scooters will require warranty service within the first months of its sale. A scooter manufacturing company sells 1000 scooters in a month. (i) Calculate t

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Question 1201092: Suppose 10% of new scooters will require warranty service within the first
months of its sale. A scooter manufacturing company sells 1000 scooters in a
month.
(i) Calculate the mean and standard deviation of scooters that require
warranty service. [2 Marks]
(ii) Calculate the moment coefficient of skewness and Kurtosis of the
distribution. [3 Marks]
Answer by ikleyn(52810) About Me  (Show Source):
You can put this solution on YOUR website!
.


        In this post,  I will answer question  (i),  only. 


(i)  to calculate the mean and the standard deviations for the binomial distribution, use the formulas

    mean = np = 1000*0.10 = 100.    ANSWER


    SD = sqrt%28n%2Ap%2A%281-p%29%29 = sqrt%281000%2A0.1%2A%281-0.1%29%29 = sqrt%2890%29 = 9.4868 (rounded).     ANSWER

Solved.