Independent random samples of professional football and basketball players gave the following information. Assume that the weight distributions are mound-shaped and symmetric.Weights (in lb) of pro football players: x1; n1 = 21243263255251244276240265257252282256250264270275245275253265271Weights (in lb) of pro basketball players: x2; n2 = 19202200220210192215222216228207225208195191207196181193201a) Use a calculator with mean and standard deviation keys to calculate s2. (Round your answers to four decimal places.) s2 = Let ?1 be the population mean for x1 and let ?2 be the population mean for x2. Find a 99% confidence interval for ?1 − ?2. (Round your answers to one decimal place.)lower limit =__

Given : confidence level,c=0.99 Significance level, α =1-0.99 = 0.01

Answered: ) Use a calculator with mean and…

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. Assume that the weight distributions are mound-shaped and symmetric.

Weights (in lb) of pro football players: x₁; n₁ = 21

243	263	255	251	244	276	240	265	257	252	282
256	250	264	270	275	245	275	253	265	271

Weights (in lb) of pro basketball players: x₂; n₂ = 19

202	200	220	210	192	215	222	216	228	207
225	208	195	191	207	196	181	193	201

a) Use a calculator with mean and standard deviation keys to calculate s₂. (Round your answers to four decimal places.)




s₂ =

Let ?₁ be the population mean for x₁ and let ?₂ be the population mean for x₂. Find a 99% confidence interval for ?₁ − ?₂. (Round your answers to one decimal place.)

lower limit =__

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