For the specified margin of error, confidence level, and educated guess for the observed value, obtain a sample size that will ensure a margin of error of at most the one specified (provided, of course, that that observed value of the sample proportion is further from 0.5 than the educated guess). margin of error = 0.03; confidence level = 95%; educated guess = 0.48 Click here to view Page 1 of the table of areas under the standard normal curve. Click here to view Page 2 of the table of areas under the standard normal curve. (Round up to the nearest integer.) n=
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!
![For the specified margin of error, confidence level, and educated guess for the observed value, obtain a sample size that will ensure a margin of error of at most the
one specified (provided, of course, that that observed value of the sample proportion is further from 0.5 than the educated guess).
margin of error = 0.03; confidence level = 95%; educated quess = 0.48
Click here to view Page 1 of the table of areas under the standard normal curve.
Click here to view Page 2 of the table of areas under the standard normal curve.
n= (Round up to the nearest integer.)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb0eba2fa-d98a-4004-a218-8be54dfcaae8%2Fd5558f81-cbd2-4fd8-b5d0-9a692b29f9b6%2F5ttvo3i_processed.jpeg&w=3840&q=75)
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