We choose a number from the set {10, 11, 12, . . , 99} uniformly at random. (a) let x be the first digit and y the second digit of the chosen number. show that x and y are independent random variables. (b) let x be the first digit of the chosen number and z the sum of the two digits. show that x and z are not independent.

1. x> -5

2. x< 8

step-by-step explanation:

1. 2x> -10

divide by 2 from both sides of equation.

2x/2> -10/2

simplify, to find the answer.

-10/2=-5

x> -5 is the correct answer.

2. 3x< 24

divide by 3 from both sides of equation.

3x/3< 24/3

simplify, to find the answer.

24/3=8

x< 8 is the correct answer.

i hope this you, and have a wonderful day!

explanation:

step-by-step explanation:

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