In a random sample of twelve people, the mean driving distance to work was 22.4 miles and the standard deviation was 7.3 miles. Assume the population is normally distributed and use the t-distribution to find the margin of error and construct a 99% confidence interval for the population mean μ. Interpret the results. A identify the margin of error. B Construct a 99 % confidence interval for the mean. C Interpret the results select the correct choice and fill in answer box to complete - Option 1 With _ % of confidence it can be said that most driving distances to work in miles in the population are between the intervals endpoints Option 2 With _ % confidence it can eb said that the population mean driving distance to work in miles is between the intervals endpoints Option 3 It can be said that _ % of the population has a driving distance to work in miles that is between the intervals endpoints Option 4 _ % of all random samples of 12 peoplle from the population will have a mean driving distance to work in miles that is between the intervals endpoints. D The new confidence is interval the confidence interval that used the t-distribution and has center OPTIONS are narrower than, wider than, and as wide as for the first and the same, greater, or less for the second

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Description: In a random sample of twelve people, the mean driving distance to work was 22.4 miles and the standard deviation was 7.3 miles. Assume the population is normally distributed and use the t-distribution to find the margin of error and construct a 99

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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In a random sample of twelve people, the mean driving distance to work was 22.4 miles and the standard deviation was 7.3 miles. Assume the population is normally distributed and use the t-distribution to find the margin of error and construct a 99% confidence interval for the population mean μ. Interpret the results. A identify the margin of error. B Construct a 99 % confidence interval for the mean. C Interpret the results select the correct choice and fill in answer box to complete - Option 1 With ___ % of confidence it can be said that most driving distances to work in miles in the population are between the intervals endpoints Option 2 With ___ % confidence it can eb said that the population mean driving distance to work in miles is between the intervals endpoints Option 3 It can be said that ___ % of the population has a driving distance to work in miles that is between the intervals endpoints Option 4 ___ % of all random samples of 12 peoplle from the population will have a mean driving distance to work in miles that is between the intervals endpoints. D The new confidence is interval ____ the confidence interval that used the t-distribution and has ____ center OPTIONS are narrower than, wider than, and as wide as for the first and the same, greater, or less for the second

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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