The weights (in pounds) of 30 participants are recorded before and after a 6 week exercise program. The mean is -3.17 and the standard deviation is 3.83. BeforeAfter210207174176150148124130222220287280175168173170264255247250Before and After WeightsBeforeAfter185184134135157155245242255247148150170165215210309300234230BeforeAfter245240287276200201186184310308167165190185220215275270225222(a) The goal is to find the 90% confidence interval for the difference in weight. Find the t-critical value. (Round your answer to the nearest thousandth)(b)Find the error, E, for the 90% confidence interval. (Round your answer to the nearest hundredth)(c)Find the 90% confidence interval for the difference in weights. (Round all answers to the nearest hundredth) (i.e. _____<d<_______)

From the provided information, Sample size (n) = 30 Sample mean (x̅) = -3.17 Sample standard…

Answered: The weights (in pounds) of 30…

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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The weights (in pounds) of 30 participants are recorded before and after a 6 week exercise program. The mean is -3.17 and the standard deviation is 3.83.

Before	After
210	207
174	176
150	148
124	130
222	220
287	280
175	168
173	170
264	255
247	250

Before and After Weights

Before	After
185	184
134	135
157	155
245	242
255	247
148	150
170	165
215	210
309	300
234	230

Before	After
245	240
287	276
200	201
186	184
310	308
167	165
190	185
220	215
275	270
225	222

(a) The goal is to find the 90% confidence interval for the difference in weight. Find the t-critical value. (Round your answer to the nearest thousandth)

(b)Find the error, E, for the 90% confidence interval. (Round your answer to the nearest hundredth)

(c)Find the 90% confidence interval for the difference in weights. (Round all answers to the nearest hundredth) (i.e. _____<d<_______)

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