(a) Use a calculator with mean and standard deviation keys to calculate x,, s,, x2, and s,. (Round your answers to four decimal places.) x, = s, = X2 %3D S2 (b) Let u, be the population mean for x, and let u, be the population mean for x,. Find a 99% confidence interval for u, - H. (Round your answers to two decimal places.) lower limit upper limit

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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100%
The following data represent petal lengths (in cm) for independent random samples of two species of iris.
Petal length (in cm) of Iris virginica: x,; n, = 36
5.0
5.6
6.5
6.1
5.1
5.5
5.3
5.5
6.9
5.0
4.9
6.0
4.8
6.1
5.6
5.1
5.6
5.9 | 5.2
6.4 5.3
4.8
5.4
5.1
5.1
5.7
5.4
4.5
5.5
6.7
5.7
4.9
4.8 5.8
5.2| 5.2
Petal length (in cm) of Iris setosa: x,; n, = 38
1.4
1.6
1.4
1.5
1.5
1.6
1.4
1.1
1.2
1.4
1.7
1.0
1.7
1.9
1.6
1.4
1.5 1.4
1.2
1.3
1.5
1.3
1.6
1.9
1.4
1.6
1.5
1.4
1.6
1.2
1.9
1.5
1.6 1.4
1.3
1.7
1.5
1.7
n USE SALT
(a) Use a calculator with mean and standard deviation keys to calculate x, s,, x2, and sz. (Round your answers to four decimal places.)
X1
s, =
S1
x, =
X2
S2
(b) Let u, be the population mean for x, and let u, be the population mean for x,. Find a 99% confidence interval for u, - Hg. (Round your answers to two decimal places.)
lower limit
upper limit
Transcribed Image Text:The following data represent petal lengths (in cm) for independent random samples of two species of iris. Petal length (in cm) of Iris virginica: x,; n, = 36 5.0 5.6 6.5 6.1 5.1 5.5 5.3 5.5 6.9 5.0 4.9 6.0 4.8 6.1 5.6 5.1 5.6 5.9 | 5.2 6.4 5.3 4.8 5.4 5.1 5.1 5.7 5.4 4.5 5.5 6.7 5.7 4.9 4.8 5.8 5.2| 5.2 Petal length (in cm) of Iris setosa: x,; n, = 38 1.4 1.6 1.4 1.5 1.5 1.6 1.4 1.1 1.2 1.4 1.7 1.0 1.7 1.9 1.6 1.4 1.5 1.4 1.2 1.3 1.5 1.3 1.6 1.9 1.4 1.6 1.5 1.4 1.6 1.2 1.9 1.5 1.6 1.4 1.3 1.7 1.5 1.7 n USE SALT (a) Use a calculator with mean and standard deviation keys to calculate x, s,, x2, and sz. (Round your answers to four decimal places.) X1 s, = S1 x, = X2 S2 (b) Let u, be the population mean for x, and let u, be the population mean for x,. Find a 99% confidence interval for u, - Hg. (Round your answers to two decimal places.) lower limit upper limit
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