The variance of a random variable X is 100. What is the stande deviation of the random variable Y = 7X + 32? A 20 B 40 C TU D 700 E 7 Professor Pender's favorite ice cream shop (The Bent Spoon in Princeton, NJ) loves to make random cones of ice cream. A cone is constructed with radius R and fixed height of 10 centimeters} where R is a uniform random variable with parameters [3, 4]. The expectation of the volume (in centimeters) of the ice cream in the cone Professor Pender will get is equal to"! A 511' B 2511' C (379/3)-7r D (370f9)-7r E 12w Let X m Beta[d,;3} be a Beta random variable with rate parameters (or, ,3) . Which values of (oz, ,5} was Professor Pender most excited about in lecture this semester? A (1,1) B (.5,.5) C (1,.5) D (2,1) E (1,2)