Use technology to construct the confidence intervals for the population variance of and the population standard deviation o. Assume the sample is taken from anormally distributed population.22.c=0.99, s=4.84, n 25The confidence interval for the population variance is ( ).(Round to two decimal places as needed.)O My CoursesCourse HomeAssignmentsGradebookChapter ContentseТextMultimedia LibraryStudy PlanTools for SuccessHelp me solve thisView an exampleGet more help-Clear allCheck answerAccessible ResourcesSkills for SuccessO Type here to search52°F A O E a a(99+10/05/17FIF3PrtScInsertDeleteF4F5F6F7F8F9F10F11F12&4.5080Backspace+ |/* CO

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Answered: Use technology to construct the…

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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Overweight Men For a random sample of 70 overweight men, the mean of the number of pounds that they were overweight was 32. The standard deviation of the population is 4.4 pounds. Part: 0 / 4 0 of 4 Parts Complete Part 1 of 4 (a) The best point estimate of the mean is how many pounds?
you measure 26 textbooks weights and find they have a mean weight of 37 ounces. assume the population standard deviation is 9.1 ounces based on this construct a 90% confidence interval for the true population mean textbook weight. give your answers as decimals to two places ____________<u<___________
Age of College Students Find the 80% confidence intervals for the variance and standard deviation of the ages of seniors at Oak Park College if a random sample of 23 students has a standard deviation of 2.5 years. Assume the variable is normally distributed. Use the chi-square distribution table to find any chi-square values to three decimal places. Round the final answers to one decimal place.
Use technology to construct the confidence intervals for the population variance o? and the population standard deviation o. Assume the sample is taken from a normally distributed population. c = 0.98, s2 = 11.56, n 27 The confidence interval for the population variance is (Round to two decimal places as needed.) Help me solve this View an example Get more help. Check answer Clear all 63°F Clea II C
Data of variable-A is collected as shown to the right. Is the mean of Variable-A less than 80? State null hypothesis and choose level of significance, a = 0.05. (Use Excel ttest function, provide clear logic and reasoning.) Variable-A Variable-B 78.8 81.9 76.9 78.0 67.8 69.7 68.9 74.7 70.5 70.0 80.0 68.2 63.0 88.7 78.7 86.7 85.4 69.5 87.0 75.1 82.4 71.8 78.2 58.1 76.9 74.8 60.2 93.2 82.6 84.6 67.2 66.5 71.7 77.2 68.9 74.0 69.3 77.7 89.1 78.6 76.3 68.3 74.0 89.0 69.4 82.1 76.3 78.0 66.2 80.3 73.9 82.4 79.1 83.1 80.4 66.4 66.2 67.6 80.9 75.3
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nework: Chap A random sample of 25 items is drawn from a population whose standard deviation is unknown. The sample mean is x = 850 and the sample standard deviation is s= 15. Use Appendix D to find the values of Student's t. (a) Construct an interval estimate of u with 95% confidence. (Round your answers to 3 decimal places.) The 95% confidence interval is from to (b) Construct an interval estimate of u with 95% confidence, assuming that s 30. (Round your answers to 3 decimal places.) The 95% confidence interval is from to (c) Construct an interval estimate of u with 95% confidence, assuming that s = 60. (Round your answers to 3 decimal places.) The 95% confidence interval is from to (d) Describe how the confidence interval changes as s increases. The interval stays the same as s increases. The interval gets wider as s increases. O The interval gets narrower as s increases.
Age of College Students Find the 90% confidence intervals for the variance and standard deviation of the ages of seniors at Oak Park College if a random sample of 20 students has a standard deviation of 2.2 years. Assume the variable is normally distributed. Use the chi-square distribution table to find any chi- square values to three decimal places. Round the final answers to one decimal place.

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