The average earnings per share (EPS)for 10 industrial stocks randomlyselected from those listed on theDow-Jones Industrial Average wasfound to be= 1.85 with a standarddeviation of s=0.395.Calculate a 99% confidence intervalfor the average EPS of all theindustrials listed on the DJIA.Lowest value of interval?Highest value of interval?

Given data,n=10x=1.85s=0.395α=0.01df=n-1=9t-critical value is tc=3.250

The average earnings per share (EPS) for 10 industrial stocks randomly selected from those listed on the Dow-Jones Industrial Average was found to be y = 1.85 with a standard deviation of s=0.395. Calculate a 99% confidence interval for the average EPS of all the

The average earnings per share (EPS) for 10 industrial stocks randomly selected from those listed on the Dow-Jones Industrial Average was found to be y = 1.85 with a standard deviation of s=0.395. Calculate a 99% confidence interval for the average EPS of all 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

See similar textbooks

Similar questions

Suppose that the lifetime of a particular component of a battery (in a container) is known to be approximately normally distributed with the mean 500 hours and standard deviation 50 hours. A purchaser requires at least 95 percent of them to have a lifetime greater than 399 hours. Will the component of a battery (in a container) meet the purchaser's specification?
In a mid-size company, the distribution of the number of phone calls answered each day by each of the 12 receptionists is bell-shaped and has a mean of 40 and a standard deviation of 4. Using the empirical rule, what is the approximate percentage of daily phone calls numbering between 32 and 48?
A manufacturer knows that their items have a normally distributed lifespan, with a mean of 7 years, and standard deviation of 1.9 years.The 2% of items with the shortest lifespan will last less than how many years?
In a mid-size company, the distribution of the number of phone calls answered each day by each of the 12 receptionists is bell-shaped and has a mean of 38 and a standard deviation of 8. Using the Standard Deviation Rule (as presented in the book), what is the approximate percentage of daily phone calls numbering between 30 and 46?
A manufacturer knows that their items have a normally distributed lifespan, with a m standard deviation of 1.8 years. The 9% of items with the shortest lifespan will last less than how many years?
In a mid-size company, the distribution of the number of phone calls answered each day by each of the 12 receptionists is bell-shaped and has a mean of 50 and a standard deviation of 10. Using the empirical rule, what is the approximate percentage of daily phone calls numbering between 30 and 70?ans = %
In a mid-size company, the distribution of the number of phone calls answered each day by each of the 12 receptionists is bell-shaped and has a mean of 42 and a standard deviation of 8. Using the empirical rule (as presented in the book), what is the approximate percentage of daily phone calls numbering between 26 and 58?Do not enter the percent symbol.ans = %
In a mid-size company, the distribution of the number of phone calls answered each day by each of the 12 receptionists is bell-shaped and has a mean of 59 and a standard deviation of 10. Using the empirical rule (as presented in the book), what is the approximate percentage of daily phone calls numbering between 39 and 79?Do not enter the percent symbol.ans = %
Assume blood-glucose levels in a population of adult women are approximately normally distributed with mean 90 mg/dL and standard deviation 13 mg/dL. - Suppose the "abnormal range" were defined to be glucose levels outside of 1 standard deviation of the mean (i.e., either at least 1 standard deviation above the mean, or at least 1 standard deviation below mean). What percentage of individuals would be called "abnormal" and need to be retested?
Assume that a population of thousands of people whose responses were used to develop the anxiety test had scores that were normally distributed with meand of 30 and standard deviation of 10. What proportion of people in this population would have anxiety scored within the following range of scores? between 10-50.
In the past, students in a particular course have achieved a mean Xmas test score of 72.6, with a standard deviation of 12.5. This year, 15 students in one section achieved a mean Xmas test score of 72.2, while 10 students in another section achieved a mean Xmas test score of 77.3. Is the overall (grand) mean of the 25 students in this year's two sections significantly different from the mean obtained in previous years (α ≤ .05)?
In a mid-size company, the distribution of the number of phone calls answered each day by each of the 12 receptionists is bell-shaped and has a mean of 35 and a standard deviation of 7. Using the empirical rule (as presented in the book), what is the approximate percentage of daily phone calls numbering between 28 and 42?Do not enter the percent symbol.ans = %