Suppose that a population parameter is 0.5 and many large samples are taken from the population. if the sample proportions are normally distributed, with 99.7% of the sample proportions falling between 0.434 and 0.566, what is the standard deviation of the sample proportions? a. 0.025 b. 0.015 c. 0.011 d. 0.022

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