(in feet) at which n = 16 drivers can read the sign are as follows. 430 500 610 530 530 590 190 430 350 610 480 410 500 530 430 480 USE SALT (a) Are the necessary conditions met for computing a confidence interval for the population mean distance? Assume that the sample can be considered to be a random sample from the populati interest. See page 450 for guidance. O Yes, all of the necessary conditions are met. O No, the sample size is too small. O No, there is an outlier. No, the sample size is too small and there is an outlier. (b) Estimate the mean maximum distance (in feet) at which drivers can read the sign. If conditions are not met, make appropriate adjustments. Use a 95% confidence interval. (Outliers may be deleted in this case. Enter your answer in the form: lower limit to upper limit. Include the word "to." Round your numerical values to one decimal places.) 424.9 to 525.1 feet

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Suppose that a highway safety researcher is studying the design of a highway sign and is interested in the mean maximum distance at which drivers are able to read the sign. The maximum distances
(in feet) at which n = 16 drivers can read the sign are as follows.
430
500 610 530 530 590 190 430
350 610 480 410 500 530 430 480
USE SALT
(a) Are the necessary conditions met for computing a confidence interval for the population mean distance? Assume that the sample can be considered to be a random sample from the population of
interest. See page 450 for guidance.
Yes, all of the necessary conditions are met.
No, the sample size is too small.
No, there is an outlier.
No, the sample size is too small and there is an outlier.
(b) Estimate the mean maximum distance (in feet) at which drivers can read the sign. If conditions are not met, make appropriate adjustments. Use a 95% confidence interval. (Outliers may be
deleted in this case. Enter your answer in the form: lower limit to upper limit. Include the word "to." Round your numerical values to one decimal places.)
424.9 to 525.1
feet
Transcribed Image Text:Suppose that a highway safety researcher is studying the design of a highway sign and is interested in the mean maximum distance at which drivers are able to read the sign. The maximum distances (in feet) at which n = 16 drivers can read the sign are as follows. 430 500 610 530 530 590 190 430 350 610 480 410 500 530 430 480 USE SALT (a) Are the necessary conditions met for computing a confidence interval for the population mean distance? Assume that the sample can be considered to be a random sample from the population of interest. See page 450 for guidance. Yes, all of the necessary conditions are met. No, the sample size is too small. No, there is an outlier. No, the sample size is too small and there is an outlier. (b) Estimate the mean maximum distance (in feet) at which drivers can read the sign. If conditions are not met, make appropriate adjustments. Use a 95% confidence interval. (Outliers may be deleted in this case. Enter your answer in the form: lower limit to upper limit. Include the word "to." Round your numerical values to one decimal places.) 424.9 to 525.1 feet
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