In a random sample of seven people, the mean driving distance to work was 18.8 miles and the standard deviation was 6.7 miles. Assume the population is normally distributed and use thet-distribution to find the margin of error and construct a 90% confidence interval for the population mean μ.Interpret the results. Identify the margin of error.(Round to one decimal place as needed.)Construct a 90% confidence interval for the population mean.(Round to one decimal place as needed.)Interpret the results. Select the correct choice below and fill in the answer box to complete your choice.(Type an integer or a decimal. Do not round.)A. With% confidence, it can be said that the population mean driving distance to work (in miles) is between the interval's endpoints.B. It can be said that% of the population has a driving distance to work (in miles) that is between the interval's endpoints.OC.% of all random samples of seven people from the population will have a mean driving distance to work (in miles) that is between the interval's endpoints.D. With% confidence, it can be said that most driving distances to work (in miles) in the population are between the interval's endpoints.

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Description: In a random sample of seven people, the mean driving distance to work was 18.8 miles and the standard deviation was 6.7 miles. Assume the population is normally distributed and use thet-distribution to find the margin of error and construct a 90%

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MATLAB: An Introduction with Applications

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ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

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In a random sample of seven people, the mean driving distance to work was 18.8 miles and the standard deviation was 6.7 miles. Assume the population is normally distributed and use thet-distribution to find the margin of error and construct a 90% confidence interval for the population mean μ.

Interpret the results.

Identify the margin of error.
(Round to one decimal place as needed.)
Construct a 90% confidence interval for the population mean.
(Round to one decimal place as needed.)
Interpret the results. Select the correct choice below and fill in the answer box to complete your choice.
(Type an integer or a decimal. Do not round.)
A. With
% confidence, it can be said that the population mean driving distance to work (in miles) is between the interval's endpoints.
B. It can be said that
% of the population has a driving distance to work (in miles) that is between the interval's endpoints.
OC.
% of all random samples of seven people from the population will have a mean driving distance to work (in miles) that is between the interval's endpoints.
D. With
% confidence, it can be said that most driving distances to work (in miles) in the population are between the interval's endpoints.

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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