Killercrawley

07.12.2019 • 

Mathematics

An urn contains 4 coins labeled 1,2,3,4. the probability of heads for coin i is i/5, i = 1,2,3,4.
a coin is randomly chosen and (the same coin is) flipped 5 times. let y be the number of heads
in the 5 flips and let x be the chosen coin.
a. what is the best (in terms of minimizing mse) prediction of y if you don’t know x?
b. what is the best prediction of y if you know x = 2?
c. what is the best prediction of y given x?
d. what is the mean squared error (mse) if you use the best prediction of y when you don’t
know x?
e. what is the mse if you use the best prediction of y and you know x = 2?
f. what is the mse if you use the best prediction of y given x?
g. what is the mse if you use 1 as your prediction of y (and you don’t know x)?
h. what is cov(x,y)?

Ответ:

CourtGard

07.10.2020

Mathematics

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(-6,0)(-3,-1)
slope = (-1 - 0) / (-3 - (-6) = -1 / 3

y = mx + b
slope(m) = -1/3
(0,-2)...x = 0 and y = -2
sub and find b, the y int
-2 = -1/3(0) + b
-2 = b

so ur equation is : y = -1/3x - 2u got it right...and u did get -2 as the y int...because in y = mx + b form, the number in the b position is ur y int

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Ответ:

bella2331

25.05.2022

Mathematics

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Step-by-step explanation:

he is trying to run more

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