answer the following

Example Get the square off the variance to get the funded devine. The random variable Y, representing the number of nuts in a chocolate bar has the following probability distribution, Compute the mean, variance and standard deviation and interpret the roads 1/10 Solution: 2/10 3/10 3/10 1/10 Following the steps in finding the vanance and standard deviation of a discrete probability distribution, the following table will be made To find for the mindand devices. X Pin X . Pix) Square the variance That is X - (X -m): 1/10 a - EX - ) . POOT -2.10 0.441 V1.29 1 2/10 2/10 -1 10 1.21 0:342 0 - 1 14 2 3/TO -010 0.01 0.00 This means that for every chocolate bar, 13 9/10 =0.90 0.81 0.243 the number of nuts is in average of 2.10 The 1/10 4/10 -1.90 161 0361 variance is 1,29 and the standard devimion is 4 - 210 0'= 1.29 1.14. This means that the data points are very spread out from the mean. and from each other tivity: Solve the following problems. 1. The number of cars sold per day at a local car dealership, along with its corresponding probabilities, is shown in the succeeding table. Compute the mean, variance and the standard deviation of the probability distribution by following the given steps. Interpret the results. X 0 2 3 4 1/10 2/10 3/10 2/10 2/10 2. The number of items sold per day at a retail store, with its corresponding probabilities, is shown in the table Find the mean, variance and standard deviation of the probability distribution. Interpret the results. 23 X 19 20 21 22 0.10 0.20 0.20 0.30 0.20