The placement data of a business school suggest that the percentage of students securing a job with a multinational during the years 1996, 1997 and 1998 are 20%, 30% and 40% respectively. One student is chosen at random from the graduating batch of each year. Let X be the number of students, out of the three so selected who had secured a job with a multinational. Calculate the following:(adsbygoogle = window.adsbygoogle || []).push({});

a) The probability distribution of X

b) The Mean of X

c) The Standard Deviation of X

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# Need help in Mean, Probability & SD

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