5.Suppose that the heights (in inches) of adult males in Tanjung Malim are believed to benormally distributed with mean u. The average height of a random sample of 25Malaysian adult males is found to be = 69.72 inches, and the standard deviation of the25 heights is found to be s = 4.15. A 90% confidence interval for u is=A.69.72 1.09B.69.72 ± 1.37C.D.69.72 ± 1.4269.72 1.71

The question is about confidence interval Given : Randomly selected no. of adult males ( n ) = 25…

Answered: 5. Suppose that the heights (in inches)…

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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Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 3 inches. The heights of 6 randomly selected students are 71, 73, 69, 72, 71 and 64. x= Margin of error at 99%= confidence level = 99% confidence interval = [smaller value, larger value]=
Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 4 inches. The heights of 6 randomly selected students are 69, 62, 68, 64, 61 and 68. x¯ = Margin of error at 99% confidence level = 99% confidence interval = [ , ]
23) The records of 100 postal employees who volunteered for a study, showed that the average time these employees had worked for the postal service was x = standard deviation of the population of time postal service employees have spent with the postal service is approximately 8 years. Assume that we know that the normal with standard deviation o 5 years. A 95% confidence interval for the mean time u the population of postal service employees have spent with the postal service is:
Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 3 inches. The heights of 7 randomly selected students are 72, 61, 74, 68, 64, 66 and 64. x¯ = Margin of error at 95% confidence level = 95% confidence interval = [ , ]
10.Past studies showed that maternal diabetes results in obesity, blood pressure,and glucose tolerance complications in the offspring. Following are thearterial blood pressures, in millimetres of mercury (mm Hg), for a randomsample of 16 children of diabetic mothers. The sample mean is ?̅= 85.99 mm Hg and the sample standard deviation is ? = 8.08 mm Hg (a)Obtain a 95% confidence interval for the mean arterial blood pressure of all children of diabetic mothers. (b)Interpret the confidence interval obtained in part (a). (c)Obtain a 90% confidence interval for the mean arterial blood pressure of all children of diabetic mothers.
2. There was a sample of 14 adult wild mountain lions who were caught and released in the San Andres Mountains. The average weight of the sample was 82.55 pounds with a sample standard deviation of 13.45 pounds. Find a 95% confidence interval for the population mean weight of all the wild mountain lions in the San Andres Mountains.
4) a. A group of doctors on a particular hospital identified that they attend an average of (15 + 18) patients per hour. Assume the standard deviation is 4. 18 random sample of 36 hours was chosen. Find the 95% confidence interval. b. Find the 90% confidence interval for the variance if a study of (9 + 18) students found the 6.5 years as standard deviation of their ages. Assume the variable is normally distributed.
Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.068.06 and a standard deviation of 1.521.52. Using the empirical rule, what percentage of American women have shoe sizes that are at least 9.589.58?

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