Independent random samples of professional football and basketball players gave the following information.Heights (in ft) of pro football players: x1; n1 = 456.336.506.506.256.506.336.256.176.426.336.426.586.086.586.506.426.256.675.916.005.836.005.835.086.755.836.175.756.005.756.505.835.915.676.006.086.176.586.506.256.335.256.666.505.82Heights (in ft) of pro basketball players: x2; n2 = 406.096.576.256.586.255.927.006.416.756.256.006.926.826.586.416.676.675.756.256.256.506.006.926.256.426.586.586.086.756.506.836.086.926.006.336.506.586.836.506.58(a) Use a calculator with mean and standard deviation keys to calculate x1, s1, x2, and s2. (Round your answers to three decimal places.)x1 = s1 = x2 = s2 = (b) Let μ1 be the population mean for x1 and let μ2 be the population mean for x2. Find a 90% confidence interval for μ1 – μ2. (Round your answers to three decimal places.)lower limit upper limit

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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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Independent random samples of professional football and basketball players gave the following information.

Heights (in ft) of pro football players: x₁; n₁ = 45

6.33	6.50	6.50	6.25	6.50	6.33	6.25	6.17	6.42	6.33
6.42	6.58	6.08	6.58	6.50	6.42	6.25	6.67	5.91	6.00
5.83	6.00	5.83	5.08	6.75	5.83	6.17	5.75	6.00	5.75
6.50	5.83	5.91	5.67	6.00	6.08	6.17	6.58	6.50	6.25
6.33	5.25	6.66	6.50	5.82

Heights (in ft) of pro basketball players: x₂; n₂ = 40

6.09	6.57	6.25	6.58	6.25	5.92	7.00	6.41	6.75	6.25
6.00	6.92	6.82	6.58	6.41	6.67	6.67	5.75	6.25	6.25
6.50	6.00	6.92	6.25	6.42	6.58	6.58	6.08	6.75	6.50
6.83	6.08	6.92	6.00	6.33	6.50	6.58	6.83	6.50	6.58

(a) Use a calculator with mean and standard deviation keys to calculate x₁, s₁, x₂, and s₂. (Round your answers to three decimal places.)

x₁ =
s₁ =
x₂ =
s₂ =

(b) Let μ₁ be the population mean for x₁ and let μ₂ be the population mean for x₂. Find a 90% confidence interval for μ₁ – μ₂. (Round your answers to three decimal places.)

lower limit
upper limit

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