O a. CI lower bound (1014) and CI two-sided (1013, 1027). Lower bound of the one-sided confidence interval is greater than the lower bound of two-sided-113-113O b. CI lower bound (1013) and CI two-sided (1011, 1029). Lower bound of the one-sided confidence interval is greater than the lower bound of two-sided-2Oc. CI lower bound (1014) and CI two-sided (1013, 1027). Lower bound of the one-sided confidence interval is greater than the lower bound of two-sided-3-2-1123-3-2-123 span of a 30-watt LED light is known to be normally distributed with o = 20 hours. Arandom sample of 20 LED light has a mean life of x = 1020 hours. Compare the 90% confidenceThe lifelower bound of this confidence interval with a two-sided confidence interval. Which standard normalcurve applies to the 90% confidence level? Include your solutions.

We have given that Sample size n =20 Sample mean = 1020 Population standard deviation =20…

Answered: span light is R. ag 01 ndom sample of…

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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Similar questions

A random sample of 64 completion times for a task gave a sample mean of 35 secs and a sample standard deviation of 16 secs. What is the 95% confidence interval for the population mean completion time? 5. Would the above interval be wider or more narrow than the 90% confidence interval?
At a factory, batteries are produced with a standard deviation of 3.2 months. In a sample of 81 batteries, the mean life expectancy is 15.6 months. Find a 90% confidence interval estimate for the life expectancy of all batteries produced at the plant.
A sample of 36 men has a mean weight of 175 pounds with a sample standard deviation of13 pounds. Use this to construct a confidence interval of confidence level 95% for the population meanweight for men.
A manufacturing company produces electric insulators. If the insulators break when in use, a short circuit is likely to occur. To test the strength of the insulators, you carry out destructive testing to determine how much force is required to break the insulators. You measure force by observing how many pounds are applied to the insulator before it breaks. Keeping a 95% confidence interval for the population mean force required to break the insulator, answer the following from the data given below: Point Estimator Standard Error t_(α⁄2) Estimating Error Lower Limit Interpret the sig value 1870 1774 1728 1550 1656 1756 1610 1762 1634 1866 1784 1820 1522 1744 1696 1788 1592 1688 1662 1810 1866 1752 1764 1680 1734 1810 1662 1652 1734 1736
A random sample of 250 preschool children in a local suburb revealed that only 232 had been vaccinated. Provide an approximate 95% confidence interval for the proportion vaccinated in that suburb. You MUST show your work to receive full credit. Give an interpretation of the confidence interval.
A laboratory tested twelve randomly selected chicken eggs and found that the mean amount of cholesterol was 166.2 milligrams with s = 5.3 milligrams. Construct a 90% confidence interval for the true mean cholesterol content of all such eggs. Write the LOWER BOUND for the confidence interval. Assume that the population has a normal distribution. Round to the nearest hundredth.
The life span of a 30-watt LED light is known to be normally distributed with standard deviation = 20 hours. A random sample of 20 LED light has a mean life of 1020 hours. Compare the 90% confidence lower bound of this confidence internal with a two-sided confidence interval. Which standardnormal curve applies to the 90% confidence level?
A random sample of 423 adult women showed that 64% are currently married. Another sample of 310 adult men showed that 60% are currently married. Find the 95% confidence interval for the difference in the population percentages between women and men. Does it appear that there could be no difference in the population between the percent of men and women who are married? Justify your conclusion.
Find the margin of error for the confidence interval of population proportion. Lower bound 0.135. Upper bound. 0.743
A random sample of 100 observations produced a mean x̅ =38.5 and a standard deviation of 3.2. find a 95% confidence interval for the population mean?
A sample of 31 cans of soup have a sample average of 102.1 mg of sodium with a sample standard deviation of 4.7 mg of sodium. Construct a 95% confidence interval for the mean sodium for all Seinfield soup. Also find the margin of error. Round your answers to 3 decimal places.
A sample of 25 automobiles has a pollution by-product release standard deviation of 2.3 ounces when one gallon of gasoline is used. Find the 99% confidence interval of the population standard deviation. What is the confidence interval of the true population variance?

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span light is R. ag 01 ndom sample of 20 LED light has a mean life of x = 1020 hours. Compare the 90% confidence wer bound of this confidence interval with a two-sided confidence interval. Which standard normal rve applies to the 90% confidence level? Include your solutions.