The following data represent petal lengths (in cm) for independent random samples of two species of iris. Petal length (in cm) of Iris virginicat xn36 5.0 5.8 6.3 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 4.8 5.4 5.1 5.1 5.9 5.2 5.7 54 4.5 6.4 5.3 5.5 6.7 5.7 4.9 4.8 5.7 5.1 5.1 Petal length (in cm) of Iris setosa n38 1.4 1.8 1.4 1.5 15 1.6 14 112 14 17 10 17 19 1.6 14 1.5 14 12 13 1.5 13 1.6 19 14 16 1.s 14 1.6 12 19 15 1.4 1.3 1.7 1.5 1.5 1.6 A USE SALT (a) Use a calculator with mean and standard deviation keys to calculate k, K, and sy. (Round your answers to four deccimal places.) (b) Let be the population mean for x, and let y be the population mean for x Find a 99% confidence interval for -w (Round your answers to two decimal places.) lower limit upper limit

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The following data represent petal lengths (in cm) for independent random samples of two species of iris.
Petal length (in cm) of Iris virginica: xin- 36
5.0
5.8
6.3 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 4.8 5.4 5.1 5.1 5.9 5.2 5.7
5.4 4.5 6.4 5.3 5.5 6.7 5.7 4.9
4.8 5.7 5.1 5.1
Petal length (in cm) of Iris setosat xi na- 38
1.4 1.8 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 14 1.6 1.2 1.9 1.5
1.6 1.4 1.3 1.7 1.5 1.5
A USE SALT
(a) Use a calculator with mean and standard deviation keys to calculate x, S, X, and s. (Round your answers to four decimal places.)
(b) Let , be the population mean for x, and let , be the population mean for x: Find a 99% confidence interval for -wa. (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: xin- 36 5.0 5.8 6.3 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 4.8 5.4 5.1 5.1 5.9 5.2 5.7 5.4 4.5 6.4 5.3 5.5 6.7 5.7 4.9 4.8 5.7 5.1 5.1 Petal length (in cm) of Iris setosat xi na- 38 1.4 1.8 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 14 1.6 1.2 1.9 1.5 1.6 1.4 1.3 1.7 1.5 1.5 A USE SALT (a) Use a calculator with mean and standard deviation keys to calculate x, S, X, and s. (Round your answers to four decimal places.) (b) Let , be the population mean for x, and let , be the population mean for x: Find a 99% confidence interval for -wa. (Round your answers to two decimal places.) lower limit upper limit
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