4.60 poverty in the us. the 2013 current population survey (cps) estimates that 22.5% of mississippians live in poverty, which makes mississippi the state with the highest poverty rate in the united states.43 we are interested in finding out the probability that at least 250 people among a random sample of 1,000 mississippians live in poverty.
(a) estimate this probability using the normal approximation to the binomial distribution.
(b) estimate this probability using the distribution of the sample proportion.
(c) how do your answers from parts (a) and (b) compare?

Aregular hexagon rotates counterclockwise about its center. it turns through angles greater than 0° and less than or equal to 360°. at how many different angles will the hexagon map onto itself?

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Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.