9.2Step 1 of 2 : Calculate the sample mean and the sample standard deviation of the fat contents. Round your answers to two decimal places, if necessary. x`=s = Step 2 of 2: construct a 99% confidence interval for the true mean fat content of all the packages of ground beef An FDA representative randomly selects 8 packages of ground chuck from a grocery store and measures the fat content (as a percent) ofeach package. Assume that the fat contents have an approximately normal distribution. The resulting measurements are given below.1215Fat Contents (%)151316151313Copy DataStep 1 of 2: Calculate the sample mean and the sample standard deviation of the fat contents. Round your answers to two decimalplaces, if necessary.

We have given that From the given information we make the following…

Answered: An FDA representative randomly selects…

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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9.2

Step 1 of 2 :

Calculate the sample mean and the sample standard deviation of the fat contents. Round your answers to two decimal places, if necessary.

x`=

s =

Step 2 of 2: construct a 99% confidence interval for the true mean fat content of all the packages of ground beef

An FDA representative randomly selects 8 packages of ground chuck from a grocery store and measures the fat content (as a percent) of
each package. Assume that the fat contents have an approximately normal distribution. The resulting measurements are given below.
12
15
Fat Contents (%)
15
13
16
15
13
13
Copy Data
Step 1 of 2: Calculate the sample mean and the sample standard deviation of the fat contents. Round your answers to two decimal
places, if necessary.

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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Construct a 90% confidence interval for the true mean fat content of all the packages of ground beef. Round the endpoints to two decimal places, if necessary.

lower:

upper:

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