Mathematics, 18.03.2021 03:00 NetherisIsTheQueen
Considering N users, with indices i = 1, 2, 3, ..., N. Suppose
that we have collected the data reflecting whether user i knows j and assume everyone knows
themselves (of course).
(1) Use the concepts in linear algebra to represent the data of who knows whom? (5%)
(2) How to measure the similarity between two users from the people they know, say they
are more similar if they know more users in common?
Answers: 1
Mathematics, 21.06.2019 17:00
Use the frequency distribution, which shows the number of american voters (in millions) according to age, to find the probability that a voter chosen at random is in the 18 to 20 years old age range. ages frequency 18 to 20 5.9 21 to 24 7.7 25 to 34 20.4 35 to 44 25.1 45 to 64 54.4 65 and over 27.7 the probability that a voter chosen at random is in the 18 to 20 years old age range is nothing. (round to three decimal places as needed.)
Answers: 1
Mathematics, 21.06.2019 19:30
Need now max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.
Answers: 1
Mathematics, 21.06.2019 20:30
25) 56(1) = 5b a. identity property of addition b. identity property of multiplication c. commutative property of multiplication d. commutative property of addition
Answers: 1
Mathematics, 22.06.2019 03:30
Louis wants to give \$15 to kids who need school supplies. he also wants to buy a pair of shoes for \$39. how much money will he have to save for both?
Answers: 1
Considering N users, with indices i = 1, 2, 3, ..., N. Suppose
that we have collected the data refl...
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