You may need to use the appropriate appendix table or technology to answer this question. The president of Doerman Distributors, Inc., believes that 35% of the firm's orders come from first-time customers. A random sample of 200 orders will be used to estimate the proportion of first-time customers. (a) Assume that the president is correct and p = 0.35. What is the sampling distribution of p for n = 200? (Round your answer for o-to four decimal places.) P σ- = P E(p) = Since np = and n(1 - p) = approximating the sampling distribution with a normal distribution---Select-- appropriate in this case. (b) What is the probability that the sample proportion p will be between 0.25 and 0.45? (Round your answer to four decimal places.) (c) What is the probability that the sample proportion will be between 0.30 and 0.40? (Round your answer to four decimal places.)
You may need to use the appropriate appendix table or technology to answer this question. The president of Doerman Distributors, Inc., believes that 35% of the firm's orders come from first-time customers. A random sample of 200 orders will be used to estimate the proportion of first-time customers. (a) Assume that the president is correct and p = 0.35. What is the sampling distribution of p for n = 200? (Round your answer for o-to four decimal places.) P σ- = P E(p) = Since np = and n(1 - p) = approximating the sampling distribution with a normal distribution---Select-- appropriate in this case. (b) What is the probability that the sample proportion p will be between 0.25 and 0.45? (Round your answer to four decimal places.) (c) What is the probability that the sample proportion will be between 0.30 and 0.40? (Round your answer to four decimal places.)
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Problem 1P
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