Ten individuals went on a low-fat diet for 12 weeks to lower their cholesterol. The data are recorded in the table below. Do you think that their cholesterol levels were significantly lowered? Conduct a hypothesis test at the 5% level.Starting cholesterol levelEnding cholesterol level140140200230110130240220200190180150190200360300280300260240a. State the null hypothesis.b What is the test statistic?

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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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Ten individuals went on a low-fat diet for 12 weeks to lower their cholesterol. The data are recorded in the table below. Do you think that their cholesterol levels were significantly lowered? Conduct a hypothesis test at the 5% level.

Starting cholesterol level	Ending cholesterol level
140	140
200	230
110	130
240	220
200	190
180	150
190	200
360	300
280	300
260	240

a. State the null hypothesis.

b What is the test statistic?

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