In a random sample of eleveneleven cell phones, the mean full retail price was $476.00476.00 and the standard deviation was $169.00169.00. Assume the population is normally distributed and use the t-distribution to find the margin of error and construct a 9090% confidence interval for the population mean muμ. Interpret the results. Identify the margin of error. 1111 cell phones (Round to one decimal place as needed.) Construct a 9090% confidence interval for the population mean. left parenthesis nothing comma nothing right parenthesis, (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. It can be said that nothing% of the population of cell phones have full retail prices (in dollars) that are between the interval's endpoints. B. With nothing% confidence, it can be said that most cell phones in the population have full retail prices (in dollars) that are between the interval's endpoints. C. nothing% of all random samples of eleveneleven people from the population of cell phones will have a mean full retail price (in dollars) that is between the interval's endpoints. D. With nothing% confidence, it can be said that the population mean full retail price of cell phones (in dollars) is between the interval's endpoints. More

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

eleveneleven

cell phones, the mean full retail price was

$476.00476.00

and the standard deviation was

$169.00169.00.

Assume the population is normally distributed and use the t-distribution to find the margin of error and construct a

9090%

confidence interval for the population mean

muμ.

Interpret the results.

Identify the margin of error.

1111

cell phones

(Round to one decimal place as needed.)

Construct a

9090%

confidence interval for the population mean.

left parenthesis nothing comma nothing right parenthesis,

(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.)

It can be said that

nothing%

of the population of cell phones have full retail prices (in dollars) that are between the interval's endpoints.

With

nothing%

confidence, it can be said that most cell phones in the population have full retail prices (in dollars) that are between the interval's endpoints.

nothing%

of all random samples of

eleveneleven

people from the population of cell phones will have a mean full retail price (in dollars) that is between the interval's endpoints.

With

nothing%

confidence, it can be said that the population mean full retail price of cell phones (in dollars) is 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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