A bag contains 15 marbles. The probability of randomly selecting a green marble is 3. The probability of randomly selecting a green marble, replacing it, and then randomly selecting a red marble is 15. What is the probability of
randomly selecting a red marble?
1/45
1/5
4/15
2/5

Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain