Mathematics, 15.02.2021 18:40, jaquisjones68

QUESTION ONE (a) Explain the following terms
(1) Random variable
(ii) Probability function
(iii) Expected value and Variance
(b) One thousand tickets are sold at TZS 1000 each for four prizes of Tzs 100,000, TZS50,
000, TZS 25,000, and TZS 10,000. After each Prize drawing, the winning ticket is then
returned to the pool of the tickets. required expected value if a person purchase two tickets

Answers: 2

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answered: Guest

a) one student is chosen from classroom a, then a student is chosen from classroom b.

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b. this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes. this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes. this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes. this makes them dependent events.

answered: Guest

Ithink the answer is b i hope it my friend message me if i’m wrong and i’ll change my answer and fix it for you

answered: Guest

so firstly, we need to isolate the y variables to be able to solve these inequalities. firstly, add 0.5x on both sides of the first inequality and subtract 1.5x on both sides of the second inequality:

now since the slope is positive for the first inequality, this means that the line going upwards belongs to the first inequality, and the line going downwards belongs to the second inequality.

next, since y ≥ in the first inequality, this means that the shaded region will be above the first inequality's line, thus shading regions a and b.

next, since y ≤ in the second inequality, this means that the shaded region is going to be below this line, thus shading regions a and c.

since both lines shade region a, this means that region a is the solution.

step-by-step explanation:

mark brainliest!

answered: Guest

answer: c ?

step-by-step explanation:

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QUESTION ONE (a) Explain the following terms
(1) Random variable
(ii) Probability functio...