QUESTION 22A car insurance company wanted information about the age of its customers. A researcher computed 90%, 95%, 97%, and 99%confidence intervals for the population mean age of the customers. Which of the following intervals is the the 97% confidence interval forthe population mean age?(36.30, 39.70)O (36.70, 39.30)(36.56, 39.44)(36.91, 39.09)

given data there are 4 confidence intervals (36.30,39.70) (36.70,39.30) (36.56,39.44) (36.91,39.09)…

Answered: A car insurance company wanted…

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 we take a survey of 400 students and ask how much they study per week. The result is an average of 8.5 hours per week. The 95% confidence interval is (8, 9). What does the confidence interval mean in this context?
A second-semester junior at a large high school wants to estimate the number of colleges a senior applies to on average before deciding where they will attend. The junior randomly selects 19 seniors and asks them how many colleges they applied to and records the number. Use the data below to construct a 99% confidence interval to estimate the true mean number of colleges seniors at this school apply to before deciding about which college to attend. 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 7, 7, 8, 9 3. Do. Use technology to find the mean and standard deviation of the sample. Round each answer to 2 decimal places. Use those values and t* from the table to calculate the confidence interval. Round the endpoints to 1 decimal place. 99% confidence interval is (, )
The daily salaries (in dollars) of teachers for 9 local schools are shown. Find the 90% confidence interval of the mean for salaries of teachers. 60 56 60 55 70 55 60 55 63
Suppose a 90% confidence interval estimate mean is (25.2, 43.4). Now, using the same exact information, you compute a 95% confidence interval. Which of the following statements is correct? O The 95% confidence interval is longer. The answer can't be determined from the information given. The intervals have the same lengths The 95% confidence interval is shorter
Construct a 90% confidence interval of the population proportion using the given information. x=240, n=300
A second-semester junior at a large high school wants to estimate the number of colleges a senior applies to on average before deciding where they will attend. The junior randomly selects 19 seniors and asks them how many colleges they applied to and records the number. Use the data below to construct a 99% confidence interval to estimate the true mean number of colleges seniors at this school apply to before deciding about which college to attend. 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 7, 7, 8, 9 4. Conclude. In repeated sampling, 99% of the time, the sample number of colleges seniors applied to will be 4.26. In repeated sampling, 99% of the time, the true mean number of colleges seniors apply to will be captured in the constructed interval. 99% of seniors will apply to 4.26 colleges. We are 99% confident that the constructed interval captures the true number of colleges seniors applied to.
Construct a 95% confidence interval for the mean number of friends for all users of the website. Compare your result with the interval found in Example #3 (given in the photo). a. Find x̅ and E.b. Find the left and right endpoints of the confidence interval.c. Interpret the results and compare them with Example #3.
Exercise 1.4 (5pts). A farmer recorded the weights of 25 randomly selected pigs from his farm. A 95% confidence interval for the mean weight was calculated to be from 280.2 to 289.8 pounds. What is being estimated by this confidence interval? Choose one: a. the weights of all pigs at this farm. b. the mean weight of 25 pigs at this farm. c. the mean weight of all pigs at this farm. d. the middle 95% of weights for pigs at this farm.
The 95% confidence interval for the mean contains the sample mean with 95% certainty.TrueFalse
We want to obtain a 95% confidence level for the national smoking prevalence (i.e., the population proportion). A SRS of n=80 finds 16 smokers. If using plus four method, what is the confidence interval? answer choices (0.126, 0.302) (0.162, 0.338) (0.120, 0.308) (0.112, 0.288)
The following sample data are from a normal population: 15, 11, 30, 19, 22, 25, 33, 28, and 36. Develop a 98% confidence interval estimate of the population mean. Show your steps and manual (hand and calculator) calculations in 1 decimal point.
The principal randomly selected six students to take an aptitude test. Their scores were:88.0 84.1 74.9 83.2 83.7 85.5Determine a 90% confidence interval for the mean score for all students.

SEE MORE QUESTIONS

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