### Understanding Confidence IntervalsIn the context of statistical analysis, a confidence interval is a range of values used to estimate a true population parameter. This range is defined by a specified level of confidence, such as 99% or 90%. The margin of error and the width of the confidence interval are crucial components in understanding the reliability and precision of this estimate.#### Question AnalysisThe question presented reads:*In question above a 99% confidence interval was computed. If the confidence level were decreased to 90%, what impact would this have on the margin of error and width of the confidence interval?*### Answer Choices:1. **Both the margin of error and the width would increase.**2. **The margin of error would increase and the width would decrease.**3. **The margin of error would decrease and the width would increase.**4. **Both the margin of error and the width would decrease.**5. **Neither the margin of error nor the width would be affected.**### ExplanationWhen we decrease the confidence level from 99% to 90%, the following changes are observed:- **Margin of Error**: The margin of error will **decrease**. This is because a lower confidence level results in a smaller z-score (or t-score), which in turn reduces the margin of error.- **Width of the Confidence Interval**: The width of the confidence interval will **decrease**. A reduced margin of error leads to a narrower interval, indicating less uncertainty in the estimate.Thus, the correct answer to the question is:*Both the margin of error and the width would decrease.*Understanding these concepts is crucial for interpreting the precision and reliability of statistical estimates in various fields of research.

It is given that the two confidence interval. Here, need to compare the effect of decreasing…

Answered: 00000 the confidence interval? Both 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

The middle 95% of a group of 1000 students got scores ranging from 50 to 90 on a math test. If the distribution of these scores is approximated by a normal distribution, about how many more if the students scored below a 60 on the test than scored above a 90?
z-test or t-test. show the result of the table in excel. upvote will be given. (YOU MAY USE EXCEL IN SOLVING THE PROBLEM. DO NOT FORGET TO SCREENSHOT THE RESULTS/table.) a. what is the null and alternative hypothesis. b. what is the p-value? c. reject or accept Ho?
i really need it asap
The pH factor is a measurement of how acidic or alkaline water is. A reading of 7.0 indicates neutrality; values above 7.0 suggest alkalinity; and values below 7.0 indicate acidity. According to one study, the optimum likelihood of capturing bass occurs when the pH of the water is between 7.5 and 7.9. Let's say you fear acid rain is lowering the pH of your favorite fishing site, and you want to see if it's less than 7.5. You obtained 10 samples and got the following data: 7.3, 7.4, 7.2, 7.0, 7.5,7.4,7.3,7.3,7.2 and 7.1. Use 0.05 alpha. a. State the alternative and null hypothesis. b. Is the pH level of the water samples less than 7.5?
The probability that ticket A will rise in price is 0.54 while the probability that the ticket B will rise in price is 0.59. The probability of both tickets rising in price is 0.44. A= ticket A will rise in priceB= ticket B will rise in price Report numeric answers to 2 decimal places. Do not convert to percent. c. at least one ticket will rise in price? d. both tickets will not rise in price? e. only one ticket will rise in price (not both)? f. no more than one ticket will rise in price?
Two classes were tested to compare the class average on the final exam. Both classes were given the same final exam. One class was allowed to use their study guide on the final and the other class was not. Identify the INDEPENDENT VARIABLE in the problem.
The pie chart shows the distribution of the opinions of parents on whether a college education is worth the expense. An economist claims that the distribution of the opinions of teenagers is different from the distribution for parents. To test this claim, you randomly select 197 teenagers and ask each whether a college education is worth the expense. Strongly agree The table to the right shows the results. At a = 0.05, test the economist's claim. Click the icon for the pie chart of the distribution. Response Somewhat agree Neither agree nor disagree Somewhat disagree Strongly disagree Survey results State Ho and H₂ and identify the claim. Ho: The distribution of the opinions of whether a college education is worth the expense is the same for teenagers and parents. Ha: The distribution of the opinions of whether a college education is worth the expense is different for teenagers and parents. Which hypothesis is the claim? Ho На Calculate the test statistic. 2 x = (Round to three decimal…
Please solve step 2,3,4 …thank you!
A social psychologist wants to see if altruism is significantly related to a person’s general health. He gets altruism scores and a measure of general health from the participants’ medical providers. The data are listed below. Higher altruism scores mean greater altruism, while high health scores = good health. Complete the appropriate statistical test and hypothesis testing using the 4 step approac Participant altruism X health Y X squared Y squared (X)(Y) A 101 33 3333 B 93 40 3720 C 85 24 2040 D 111 46 5106 E 104 30 3120 F 89 28 2492 Total State your conclusion in APA format. Alpha level = .05.
Help!!
Define If the actual Y score was 31, but the predicted score was 28, then the error of prediction is 3?
Mrs. Kelley noticed a strong positive correlation between the hours students said that they studied for a test and their scores on the test. Which fact would lead you to believe that the relationship between studying and test scores is one of causation and not correlation?

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