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Mathematics, 20.07.2020 01:01 fathimasaynas2975
Consider the following joint distribution for the weather in two consecutive days. Let X and Y be the random variables for the weather in the first and the second days, with the weather coded as 0 for sunny,1 for cloudy, and 2 for rainy.
X
Y 0 1 2
0 0.2 0.2 0.2
1 0.1 0.1 0.1
2 0 0.1 0
Required:
a. Find the marginal probability mass functions for X and Y .
b. Calculate the expectation and variance for X and Y .
c. Calculate the covariance and correlation between X and Y . Are they correlated?
d. Are the weather in two consecutive days independent?
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