ipie Assess it Da'sheunna Purifoy PAP Alg 2-2903012-43200P-1 / 4th Quarter Lessons / Week 7/ Lesson 149 All changes saved 1. The owner of a nationwide chain of shopping malls is interested in the buying habits, on any given day, of the people who shop at the malls. Which sentence describes the best sample the owner could use to make inferences about the population? O Randomly select a sample of shopping malls from the chain throughout the nation and survey a random sample of the people who shop at the mall each day of the week. O Choose one shopping mall from the chain and survey all the people who shop there every day of the week. O Randomly select a sample of shopping malls from the chain throughout the nation and survey a random sample of the people who shop at the mall on Friday. O Choose one shopping mall from the chain and survey the managers of the three largest stores about the habits of the people who shop in their stores.

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Continuous Probability Distributions

Probability distributions are of two types, which are continuous probability distributions and discrete probability distributions. A continuous probability distribution contains an infinite number of values. For example, if time is infinite: you could count from 0 to a trillion seconds, billion seconds, so on indefinitely. A discrete probability distribution consists of only a countable set of possible values.

Normal Distribution

Suppose we had to design a bathroom weighing scale, how would we decide what should be the range of the weighing machine? Would we take the highest recorded human weight in history and use that as the upper limit for our weighing scale? This may not be a great idea as the sensitivity of the scale would get reduced if the range is too large. At the same time, if we keep the upper limit too low, it may not be usable for a large percentage of the population!