From the document Smartphone Ownership by the Pew Research Center and the document Current Population Survey by the U.S. Census Bureau, we constructed the following joint probability distribution for educational attainment and smartphone ownership for U.S. adults.

A U.S. adult is selected at random. Determine the probability that the person selected
a. Owns a smartphone.
b. is a college grad.
c. Owns a smartphone and is a college grad.
d. Owns a smartphone, given that the person is a college grad.
e. Is a college grad, given that the person owns a smartphone.
f. Interpret your answers in parts (a)-(e) in terms of percentages.

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Owner Yes No Si Not HS grad 0.046 0.083 0.129 HS grad 0.144 0.168 0.312 E2 Some college 0.101 0.101 0.067 0.168 College gracd E4 0.274 0.117 0.391 P(Sj) 0.564 0.4361.000