1. Birds can regrow feathers if they are lost. A researcher was interested in whether newly regrown feathers inthe tails of northern flickers differed in colour (yellowness in particular) compared to older feathers. To test this,they measured the yellowness of one new and one randomly selected old feather on each of 20 birds. A plot oftheir data and the results of their analysis are shown below.Yellowness160150140130newXFeatheroldWelch Two Sample t-test=data: Yellowness by Feathert = 1.5832, df 37.986, p-value165sample estimates:mean in group new mean in group old147.9623143.3000160New155150145140135= 0.1217alternative hypothesis: true difference in means is not equal to 095 percent confidence interval:-1.299296 10.623962TTTTT130 135 140 145 150 155 160Olda) From the results above, what is the null hypothesis and what statistical conclusion do you make concerning it?

Welch Two Sample t-test data: Yellowness by Feather t = 1.5832, df = 37.986, p-value = 0.1217 alternative hypothesis: true difference in means is not equal to 0 95 percent confidence interval: -1.299296 10.623962 sample estimates: mean in group new mean in group old 143.3000 147.9623 a) From the results above, what is the null hypothesis and what statistical conclusion do you make concerning it?

Welch Two Sample t-test data: Yellowness by Feather t = 1.5832, df = 37.986, p-value = 0.1217 alternative hypothesis: true difference in means is not equal to 0 95 percent confidence interval: -1.299296 10.623962 sample estimates: mean in group new mean in group old 143.3000 147.9623 a) From the results above, what is the null hypothesis and what statistical conclusion do you make concerning it?

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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Multiple choice questions
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