A random sample of the closing stock prices in dollars for a company in a recent year is listed below. Assume that σ is $1.92. Construct the 90% and 99% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals.17.0120.6320.3219.8321.1115.8320.7719.3916.1315.2518.9919.2320.0715.8921.0818.78The 90% confidence interval is (s)

The question is about confidence interval.Given :Standard deviation of population ( ) = $1.92

Answered: A random sample of the closing stock…

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

The 2018 General Social Survey contains information on the number of poor mental health days adults in the US had in the last month. The data are below. Construct the 90% confidence interval for the mean number of poor mental health days for males. Table 1. Mean number of poor mental health days in the last 30 days by sex Male Female Total 3.55 6.78 1408 Mean 3.02 4.06 S.D. 6.43 7.07 678 730 Source: GSS 2018 Your agswer The 2018 General Social Survey contoins information on the nomberet
You are interested in finding a 90% confidence interval for the average number of days of class that college students miss each year. The data below show the number of missed days for 10 randomly selected college students. Round answers to 3 decimal places where possible. 1 3 10 10 12 11 10 6 10 3 a. To compute the confidence interval use a Correct distribution. b. With 90% confidence the population mean number of days of class that college students miss is between and days. c. If many groups of 10 randomly selected non-residential college students are surveyed, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population mean number of missed class days and about percent will not contain the true population mean number of missed class days.
Read and answer these question
A sample of freshman takes a reading comprehension test and their scores are summarized below. Sample scores: 16, 8, 8, 6, 9, 11, 13, 9, 10 a. if the mean for the general population on this test is m=12, can you conclude that this sample is significantly different from the population. Test with a=.05 b. Calculate a 90% confidence interval around your mean.
Provide the confidence interval that are missing
In the table below the miles per gallon of 2007 Ford Taurus car is shown for 13 different owners. Treat the sample as a simple random sample of all 2007 Ford Taurus cars.a. Construct a 95% confidence interval for the mean miles per gallon of a 2007 Ford Taurus. Interpret the interval. 28.5 26.0 21.7 26.3 18.8 24.0 23.423.8 23.5 26.1 28.4 18.0 25.2 b. How large a sample is required to estimate the mean miles per gallon with 0.5 mile per gallon with 95% confidence?
A sample of the length in inches for newborns is given below. Assume that lengths are normally distributed. Find the 99% confidence interval of the mean length. Length 15.2 15.6 20.6 16.3 15.4 17.4 18.1 20.6 18.6 20.7
Refer to the accompanying data set and construct a 95% confidence interval estimate of the mean pulse rate of adult females; then do the same for adult males. Compare the results. Click the icon to view the pulse rates for adult females and adult males. Pulse Rates Pulse Rates (beats per minute) 84 76 50 61 53 63 52 74 55 63 75 60 62 77 82 64 69 94 41 88 Males 74 63 75 71 57 66 55 80 75 63 63 97 60 63 57 58 65 73. 82 56 4 Print Females 79 92 60 68 56 81 77 85 88 58 37 63 87 77 81 63 67 80 58 62 82 82 71 76 88 92 89 91 91 97 66 92 80 78 72 53 102 73 76 74 Done - X
A laboratory tested 85 chicken eggs and found that the mean amount of cholesterol was 191 milligrams. Assume that o = 16.2 milligrams. Construct a 95% confidence interval for the true mean cholesterol content, µ, of all such eggs. Round to one decimal place. O A. 186.9 to 195.1 milligrams B. 186.5 to 195.5 milligrams C. 188.1 to 193.9 milligrams D. 187.6 to 194.4 milligrams
I need the right answers!
You are interested in finding a 90% confidence interval for the average commute that non-residential students have to their college. The data below show the number of commute miles for 14 randomly selected non-residential college students. Round answers to 3 decimal places where possible. 5 8 11 10 12 19 24 6 26 10 26 10 26 15 a. To compute the confidence interval use a distribution. b. With 90% confidence the population mean commute for non-residential college students is between and miles. c. If many groups of 14 randomly selected non-residential college students are surveyed, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population mean number of commute miles and about percent will not contain the true population mean number of commute miles.
Answer these question

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