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question the variance in the previous problem grew by a factor of four when the number of trials grew by a factor of 4
question what is the variance for the number of heads in one flip of a coin what is the sum of the variances for four
question we have a nickel and quarter in a cup we withdraw one coin what is the expected amount of money we withdraw
question one idea that is often used in selection is that instead of choosing a random pivot element we choose three
question in a card game we remove the jacks queens kings and aces from a deck of ordinary cards and shuffle them you
question let ai j denote the array of items in positions i through j of the array a in selection sort we use the
question given an array a of length n chosen from some set that has an underlying ordering we can select the largest
question consider an algorithm that given a list of n numbers prints them all out then it picks a random integer
question i have two nickels and two quarters in my left pocket and 4 dimes in my right pocket suppose i flip a penny
question let a1 n denote the elements in positions 1 to n of the array a a recursive description of insertion sort is
question let a be an array of length n - 1 whose elements are chosen from some ordered set sorted into increasing order
question we have seen a number of occasions when our intuition about expected values or probability in general fails us
question again as in the previous exercise we have c children choosing from among ample supplies of d different kinds
question a candy machine in a school has d different kinds of candy assume for simplicity that all these kinds of candy
question in real applications it is often the case that the hash table size is not fixed in advance since you dont know
question again we are hashing n items into k locations our model of hashing is that of exercise 55-1 what is the
question we are going to compute the expected number of items that hash to any particular location in a hash table our
question suppose you hash n items into a hash table of size k it is natural to ask about the time it takes to find an
question what is the expected number of empty slots when we hash 2k items into a hash table with k slots what is the
question two nickels two dimes and two quarters are in a cup we draw three coins one after the other without
question do problem of this section for the case that someone is taking a multiple choice test with five choices for
question someone is taking a true-false test and guessing when they dont know the answer we are going to compute a
question what is the expected value of the constant random variable x that has xs c for every member s of the sample
question suppose i offer to play the following game with you if you will pay me some money you roll a die and i give
question how many times do you expect to have to flip a coin until you first see a head why how many times to you