The admissions director for a university found that (107.8, 116.2) is a 95% confidence interval for the mean IQ score of allfreshmen.Is the following explanation correct, based on that information?There is a 95% probability that the interval from 107.8 to 116.2 contains.Correct. That is the meaning of 95% confidence.Incorrect. It should say that there is a 95% probability that the interval from 107.8 to 116.2 contains μ.Incorrect. 95% of the students at this university have an IQ between 107.8 and 116.2.Incorrect. If we take many samples, about 95% of them will contain the interval (107.8, 116.2)Incorrect. The point estimate x will always be in the center of the confidence interval, so there is a 100% chance that xwill be in the interval.

Answered: shmen. Is the following explanation…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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You have a sample of 48 randomly selected Vancouverites. On average (the sample mean), the people in your sample spent 425 hours eating food in 2020. The least time a person in the sample spent eating food in 2020 is 367 hours and the most time a person in the sample spent eating food in 2020 is 484 hours. What would be your best guess about the population standard deviation of the time a Vancouverite spent eating food in 2020? Give the number and explain (including assumptions you make about the population distribution).
Thelma and Louise are each attempting to estimate the proportion of adults who enjoy listening to country music. They each survey a different random sample of adults, and in each sample, the proportion who say they enjoy listening to country music is 0.29. Thelma and Louise each use their sample data to construct a confidence interval. Thelma's interval is from 0.242 to 0.338 and Louise's interval is from 0.237 to 0.323. One of these intervals was computed correctly and the other was not. Which interval must be the correct one? It's impossible to answer this question without knowing the level of confidence used for each interval. It's impossible to answer this question without knowing the sample sizes. O It's impossible to answer this question without knowing the sample sizes or the level of confidence used for each interval. Thelma's interval must be the correct interval. O Louise's interval must be the correct interval.
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Construct an 80 % confidence interval for the mean height of sons whose fathers are 70 inches tall. Round your answer to at least three decimal places. An 80 % confidence interval for the mean height of sons whose fathers are 70 inches tall is (this is part 2 of 2 of the math problem, please and thank you
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Explain what "98% confidence" means in a 98% confidence interval. What does "98% confidence" mean in a 98% confidence interval? CHU OA. If 100 different confidence intervals are constructed, each based on a different sample of size n from the same population, then we expect 98 of the intervals to include the parameter and 2 to not include the parameter. OB. The confidence interval includes 98% of all possible values for the parameter OC. The probability that the value of the parameter lies between the lower and upper bounds of the interval is 98%. The probability that it does not is 2% OD. The value of the parameter lies within 98% of a standard deviation of the estimate.
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both questions please. thank you!
In a survey of 2294 adults, 740 say they believe in UFOS. Construct a 99% confidence interval for the population proportion of adults who believe in UFOS. A 99% confidence interval for the population proportion is ( ). (Round to three decimal places as needed.) Interpret your results. Choose the correct answer below. O A. The endpoints of the given confidence interval shows that 99% of adults believe in UFOS. O B. With 99% confidence, it can be said that the sample proportion of adults who believe in UFOS is between the endpoints of the given confidence interval. OC. With 99% confidence, it can be said that the population proportion of adults who believe in UFOS is between the endpoints of the given confidence interval. D. With 99% probability, the population proportion of adults who do not believe in UFOS is between the endpoints of the given confidence interval. Click to select your answer(s).
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