Retail stores, such as Target and Walmart, along with eCommerce sites, such as Amazon and eBay, rely heavily on the holiday shopping period of October, November, and December to drive their overall revenue. In recent years, these types of retailers have coupled big data with time series analytics to enhance marketing, supply chain, operations, and customer relations.

Using the Internet, identify an example of where a retail company has done this. The example could be positive or negative, but should clearly include evidence that the company used big data and time-series analytics in an effort to improve its revenue. If the example you find does not discuss the use of analytics, then it is not considered. The example selected must show that the company used analytics to magnify its business effectiveness through data and analytics activities. Provide a summary of the example you have chosen. Specifically, discuss the analytic techniques the company used and what they intended to accomplish through their data-driven activities. Report on the company's success in its endeavors. If there are negative aspects of their efforts, be sure to highlight those (examples might include errors in their analysis or forecasts, or backlash from consumers for some reason).

U, with 50% chance 3.3.4 W = V with 50% chance O W is not Gaussian. O W is Gaussian. Mean is 0 and variance is 2. O W is Gaussian. Mean is 0 and variance is 1. O Cannot be determined.3.3 Given two independent Gaussian random variables U ~ N(-1, 1) and V ~ N(1, 1), are the following random variables also Gaussian? If so, what are their means and (co)-variances? Note that T is a vector. 3.3.1 Y = U +V O Y is not Gaussian. O Y is Gaussian. Mean is 0 and variance is 2. O Y is Gaussian. Mean is 0 and variance is 1. O Y is Gaussian. Mean is 2 and variance is 2. 3.3.2 Z = Ux V O Z is not Gaussian. O Z is Gaussian. Mean is -1 and variance is 1. O Z is Gaussian. Mean is 0 and variance is 1. O Z is Gaussian. Mean is 0 and variance is 2.Problem 2 Write a function gaussian that calculates the Gaussian pdf, f (x) = exp -? (* , " ) . When called with only x as an input argument, the function should return the pdf of the standard Gaussian distribution. In [ ]: # Write the function here YOUR CODE HERE raise Not ImplementedError ( ) In [ ] : from nose. tools import assert_equal assert_equal( gaussian(1, 1.2, 2), 0. 1984762737385059) assert_equal (gaussian(1), 0. 24197072451914337)Question 4 A cube of edge length L - 50.0em in a uniform electric field E = 2,000 N/C is oriented upward as shown in the Figure. a) Calculate the electric flux of surface ABCD b) Calculate the electric flux of surface EFGH c) Calculate the electric flux of surface ADHE Calculate the electric flux of surface BCGF, CDHG, ABFE e) Find the net electric flux through the closed surface of a cube. H D B n HT / U AA.IEEE ECE * V [D) AT The 12pt e hp 27