A confidence interval for a population mean has a margin of error of 3.3.a. Determine the length of the confidence interval.b. If the sample mean is 49.1, obtain the confidence interval.c. Construct a graph that illustrates your results.a. The length of the confidence interval is.(Type an integer or a decimal. Do not round.)b. The confidence interval for μ is from to(Type integers or decimals. Do not round.)c. Choose the correct graph below.OA.O C.44EConfidenceIntervalEQB.D.43ConfidenceIntervalTime Remaining: 01:07:5752Next

The given margin of error is 3.3.

Answered: A confidence interval for a population…

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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Decreasing the sample size while the confidence level remains the same, will do what to the length of your confidence interval? A. cannot be determined from the given information B. make it bigger C. it will stay the same D. make it smaller
You are interested in finding a 98% confidence interval for the mean number of visits for physical therapy patients. The data below show the number of visits for 11 randomly selected physical therapy patients. Round answers to 3 decimal places where possible. 18 6 28 15 15 16 9 8 28 15 17 a. To compute the confidence interval use a distribution. b. With 98% confidence the population mean number of visits per physical therapy patient is between and visits. c. If many groups of 11 randomly selected physical therapy patients are studied, 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 visits per patient and about percent will not contain the true population mean number of visits per patient.
Determine whether the statement below makes sense or does not make sense. Explain clearly. Based on our sample, the 95% confidence interval for the mean amount of television watched by adults in a nation is 2.9 to 4.3 hours per day. Therefore, there is 95% chance that the mean for all adults in the nation will fall somewhere in this range and a 5% chance that it will not. C Choose the correct answer below. O A. The statement makes sense. There is 5% probability that the confidence interval limits do not contain the true value of the sample mean, so the probability it does not contain the true value of the population mean is also 5%. O B. The statement does not make sense. The population mean is a fixed constant that either falls within the confidence interval or it does not. There is no probability associated with this. O C. The statement does not make sense. The probability the population mean is greater than the upper limit is 5% and the probability it is less than the lower limit is…
Use the confidence interval to find the margin of error and the sample mean. (0.614,0.690) The margin of error is The sample mean is
K A R Explain how finding a confidence interval for a population variance is different from finding a confidence interval for a population mean or proportion. Choose the correct answer below. OA. Unlike a confidence interval for a population variance, a confidence interval for a population mean or proportion does not have a margin or error. The left and right endpoints must be calculated separately. OB. Unlike a confidence interval for a population variance, a confidence interval for a population mean or proportion does not have a margin or error. The left and right endpoints must not be calculated separately OC. Unlike a confidence interval for a population mean or proportion, a confidence interval for a population variance does not have a margin or error. The left and right endpoints must not be calculated separately OD. Unlike a confidence interval for a population mean or proportion, a confidence interval for a population variance does not have a margin or error. The left and right…
Use the confidence interval to find the estimated margin of error. Then find the sample mean. A biologist reports a confidence interval of (2.3,3.1) when estimating the mean height (in centimeters) of a sample of seedlings. The estimated margin of error is The sample mean is B
C?
Use the formula in this example to determine the sample size, n.The estimated prevalence is 19%, and the desired confidence level is 93% with a margin of error of 4%. (Round your answer to the nearest integer.)n =
aanswer pleeasea:
Use the confidence interval to find the estimated margin of error. Then find the sample mean. A biologist reports a confidence interval of (2.3,3.3) when estimating the mean height (in centimeters) of a sample of seedlings. The estimated margin of error is

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