In selecting the sample size to estimate the populationproportion p, if we have no knowledge of even theapproximate value of the sample proportion p, we:OA. let p0.50OB. let p0.95OC. take another sample and estimate pD. take two more samples and find the average oftheir p==A random sample of size n has been selected from anormally distributed population whose standarddeviation is o. In hypothesis testing for the populationmean, the t-test should be used instead of the z-test if:OA. n > 30 and ♂ is unknownB. n < 30 and o is knownC. both A and B are trueD. both A and B are false

It is given that the statement about to the population proportion. Here, need to find out the…

Answered: In selecting the sample size to…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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from the given parameters of the population and sample size. and o Determine H= 86, o = 16, n 64
In this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value by a small amount and therefore produce a slightly more "conservative" answer. The western United States has a number of four-lane interstate highways that cut through long tracts of wilderness. To prevent car accidents with wild animals, the highways are bordered on both sides with 12-foot-high woven wire fences. Although the fences prevent accidents, they also disturb the winter migration pattern of many animals. To compensate for this disturbance, the highways have frequent wilderness underpasses designed for exclusive use by deer, elk, and other animals. In Colorado, there is a large group of deer that spend their summer months in a region on one side of a highway and survive the winter months in a lower region on the other side. To…
In this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value by a small amount and therefore produce a slightly more "conservative" answer. The western United States has a number of four-lane interstate highways that cut through long tracts of wilderness. To prevent car accidents with wild animals, the highways are bordered on both sides with 12-foot-high woven wire fences. Although the fences prevent accidents, they also disturb the winter migration pattern of many animals. To compensate for this disturbance, the highways have frequent wilderness underpasses designed for exclusive use by deer, elk, and other animals. In Colorado, there is a large group of deer that spend their summer months in a region on one side of a highway and survive the winter months in a lower region on the other side.…
A software company is interested in improving customer satisfaction rate from the 60% currently claimed. The company sponsored a survey of 148 customers and found that 95 customers were satisfied. What is the test statistic z?
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In selecting the sample size to estimate the population proportion p, if we have no knowledge of even the approximate value of the sample proportion p, we: A. let p 0.50 B. let p = 0.95 = C. take another sample and estimate p D. take two more samples and find the average of their p