00?圆8民□图〗There is some speculation that a simple name change can result in a short-term increase in the price of certain business firms' stocks (relative to the prices ofsimilar stocks). Suppose that to test the profitability of name changes, we analyze the stock prices of a large sample of corporations shortly after they changednames, and we find that the mean relative increase in stock price was about 0.79%, with a standard deviation of 0.20%. Suppose that this mean and standarddeviation apply to the population of all companies that changed names. Complete the following statements about the distribution of relative increases in stockprice for all companies that changed names.(a) According to Chebyshev's theorem, at least (Choose one) of therelative increases in stock price lie between 0.39% and 1.19%.(b) According to Chebyshev's theorem, at least 56% of the relativeincreases in stock price lie between % and %. (Round youranswer to 2 decimal places.)5

a) 75%b) 0.49% and 1.09%Explanation:We have the given data:µ=0.79%σ=0.20% In solving this problem,…

Answered: 00 ?圆8民□图〗 There is some speculation…

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

In a recent study on world happiness, participants were asked to evaluate their current lives on a scale from 0 to 10, where O represents the worst possible life and 10 represents the best possible life. The mean response was 5.4 with a standard deviation of 2.6. (a) What response represents the 92nd percentile? (b) What response represents the 65th percentile? (c) What response represents the first quartile? ..... (a) The response that represents the 92nd percentile is (Round to two decimal places as needed.) (b) The response that represents the 65th percentile is (Round to two decimal places as needed.) (c) The response that represents the first quartile is (Round to two decimal places as needed.)
A standardized memory test has a mean of μ = 100 and a standard deviation of σ= 10. What percent of individuals would score between 89 and 115?
q10
If you draw a sample of size 10 from a population of size 35 with a population mean of 83.4 and standard deviation of 6.4 with replacement, what is the estimated value for the standard deviation of the sample means?
Newborn babies: A study conducted by the Center for Population Economics at the University of Chicago studied the birth weights of 758 babies born in New York. The mean weight was 3154 grams with a standard deviation of 835 grams. Assume that birth weight data are approximately bell-shaped. (a) Estimate the number of newborns whose weight was less than 4824 grams. (b) Estimate the number of newborns whose weight was greater than 2319 grams (c) Estimate the number of newborns whose weight was between 3154 and 3989 grams. Approximately of the 758 newborns weighed between 3154 and 3989 grams.
When a state does not win a representative to another state, though its population is increasing at a quicker rate than that of the other state. ALABAMA Paradox POPULATION Paradox NEW-STATE Paradox Block 101 got a mean of 87.5 with a standard deviation of 3.2 while Block 102 got a mean of 85.1 with a standard deviation of 4.5 in the Comprehensive Final Exam. What statistical measure will best describe the relative measure of dispersion of the two blocks? mean standard deviation coefficient of variation range
In a recent study on world happiness, participants were asked to evaluate their current lives on a scale from 0 to 10, where 0 represents the worst possible life and 10 represents the best possible life. The mean response was 5.5 with a standard deviation of 2.3. (a) What response represents the 94th percentile? (b) What response represents the 57th percentile? (c) What response represents the first quartile?
QUESTION 1 An equity analyst wants to verify whether there is a variation in the mean rate of return for 7 types of equity. The analyst selected a sample of 65 and conducted an ANOVA test that is shown as follows. Variation SS df MS Between 111 ? (Treatment) Within (Error) Total 862 The Within (Error) degree of freedom is equal to?
Steps Of Hypothesis Testing 1. State your hypothesis 2. Choose the test statistic 3. Calculate the test statistic 4. Calculate the p-value 5. Draw your conclusion
question(10a): What type of statistical test that could used to test the following hypothesis. (A) there are 92 public colleges and universites in Canada. The average tution in 2016-2017 was $6392 per year(2 semesters) You believe that the tution has increase signifcantly for 2016-2017 school year. You sample the published tution fee for 12 schools across Canada . You find the mean tution fee for the same period is $6879 with a standard deviation of $568. (ii) Researchers were interested in the effects of lead consumption through contaminated water in Flint, MI on the intelligence of children. They sample 25 children at the local elementary school and gave them the WISC test. In a typically developing population in the US, the WISC has a mean score of 100 and astandard deviation of 15. The researchers believe that the lead consumption that had been on going since 2014.When they average the WISC for the 25 children in Flint they the mean IQ of 93.5
A doctor is using a growth chart for baby girls that indicates a 12-month-old baby girl has a mean weight of 21.1 pounds with a standard deviation of about 2.29 pounds. Assume that the weights are approximately normally distributed. What proportion of 12-month-old baby girls weigh between 19.62 and 22.17 pounds?
Many psychologists are concerned that the average level of anxiety in children has increased over the past 40 years. In the 1980s, the population average score on the Child Manifest Anxiety Scale (CMAS) was 15.1. In 2021, a random sample of 101 children was tested with CMAS. The mean for the sample was 16.1 with the standard deviation of 4. Is there enough evidence to claim that there has been a significant change in the average level of anxiety since the 1980s? Conduct the appropriate statistical test (two- tailed) with a = .05. Based on the estimated Cohen's d, the magnitude of change in the average level of anxiety since the 1980s could best be qualified as: O Very large O Large O No change OSmall

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS