QUESTION 11If the acceptable margin of error decreases for an interval estimate for proportion, the minimum sample size needed to make that estimation willO A. increase because a larger sample will have larger errorO B. not change because the zdoes not depend on sample sizea12O C. decrease because a smaller sample allows for decreased accuracyO D. increase because a latger sample is needed for increased accuracyO E. decrease because a smaller sample will have smaller errorClick Save and Submit to save and submit. Click Save All Answers to save all answers.DELLF9F10F7F8EscF5F6F4F2F3F1%23$48.45WE R I

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Answered: If the acceptable margin of error…

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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The finite population correction is most useful for which of the following? a. It adjusts the estimated mean when the sample size is a large fraction of the population size. b. It adjusts the standard error of the mean when the sample size is a small fraction of the population size. c. It adjusts the estimated mean when the sample size is a small fraction of the population size. d. It adjusts the standard error of the mean when the sample size is a large fraction of the population size.
A drug company claims that their products’ contaminations never vary by more than 2%. Sample of 5 specimens were tested and the percentages of the purities are recorded as Observation no. 1 2 3 4 5 Percentages (%) 98.8 97.2 98.9 97.7 97.9 a. Do the sample data have enough proof to oppose the manufacturer's claim? (HINT: take the range of 2% equal 4o.) b. Find a 90% confidence interval for o?.
For the coefficient of an independent variable to be statistically significant and accepted as a valid estimate of the population coeficient, the prob. (or p-value) associated with the coefficient must be: O less than 0.01 O larger than 0.10 equal to or less than 0.05 O less than 1.00.
The power of the slope t-test is NOT determined by: A)direction of slope B) sample size C) effect size D) alpha
Below a r bivariate data sets and their scatter plots. (Note that all of the scatter plots are displayed with the same scale.) Each data set is made up of sample values drawn from a population. x y 11- 1- 1.0 1.0 1.0 7.5 10+ 9- 8- 7- 6- 10+ 2.0 8.8 8- 3.0 6.9 2.0 2.0 9- 3.0 3.0 7- 4.0 5.2 5.0 8.4 6.0 4.9 7.0 4.7 8.0 6.8 9.0 6.1 4.0 4.0 6- 5- 5- 5.0 5.0 4- 4- 6.0 6.0 3- 2 3- 7.0 7.0 2 1- 1- 8.0 8.0 9.0 9.0 10.0 10.0 Figure 1 10.0 4.2 Figure 2 1- 1.0 2.6 10- 1.0 6.7 10+ 9- 2.0 9.6 8- 3.0 3.6 2.0 4.5 9- 3.0 3.2 7- 1- 4.0 5.0 4.0 9.2 6- 6- 5- 5- 5.0 4.9 6.0 2.0 7.0 5.6 8.0 9.8 9.0 5.2 10.0 8.2 Figure 4 5.0 4.6 4- 6.0 7.0 7.0 6.0 8.0 7.7 3- 3- 2- 2- 1- 9.0 7.1 10.0 8.4 Figure 3 Answer the following questions about the relationships between pairs of variables and the values of r, the sample correlation coefficient. The same response may be the correct answer for more than one question. (a) For which data set is the sample correlation coefficient r closest to 0? ? Choose one) (b) Which data…
D, E, F only
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. I need help with sketchng the distribution, (d) and (e)
(Round up to the nearest whole number as needed.)
In a random sample of 765 adults in the United States, 122 of them said if they had to cover a $400 emergency expense, they would need to use a credit card and pay it back over time. a. what is the parameter being estimated b. what is the sample proportion (must show work)
Determine the point of estimate of the population mean and margin of error from the given information: Lower Bound: 5 Upper Bound: 23 Question 4 options: x¯= 15 E = 10 x¯= 12 E = 9 x¯= 13.5 E = 9 x¯= 14 E = 9
Let X be a quantitative variable whose values are form a population under study and X⎯⎯⎯⎯ be the corresponding sample mean RV. If population and sample sizes are 3601 and 196, respectively, and σX=149, then SD(X⎯⎯⎯⎯) is Select one: ≈10.64 None ≈10.35 ≈10.94 ≈0.76
Determine the minimum sample size required when you want to be 95% confident that the sample mean is within one unit of the population mean and o=17.2. Assume the population is normally distributed

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