Bob is doing a quality test on machine bolts. He tested 24 bolts that he randomly picked and found that 5 were defective. Based on Bob's results, what is the expected number of bolts that will be defective if he tests 840 bolts?

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