3. A study was carried out into how social media use may affect peoples level of fitness. A random sample of subjects were classified by how much time they reported spending on social media, ranging from none to Frequent, and an assessment of their fitness. The results are shown in the following table. NoneOccasionalSome UseFrequentUnfit23251619Fit27262323Very Fit2623188Answer the following questions.(a) Show the calculations that must be done for any two cells when calculating the sample value of the test statistic Q shown here.? (Oi − Ei)2Q = E = 5.90.ii(b) Carry out an appropriate statistical test to determine whether there is a link between level of social media use and fitness.

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Answered: A study was carried out into how social…

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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3. A study was carried out into how social media use may affect peoples level of fitness. A random sample of subjects were classified by how much time they reported spending on social media, ranging from none to Frequent, and an assessment of their fitness. The results are shown in the following table.

	None	Occasional	Some Use	Frequent
Unfit	23	25	16	19
Fit	27	26	23	23
Very Fit	26	23	18	8

Answer the following questions.

(a) Show the calculations that must be done for any two cells when calculating the sample value of the test statistic Q shown here.

? (Oi − Ei)2
Q = E = 5.90.

ii
(b) Carry out an appropriate statistical test to determine whether there is a link between level of social media use and fitness.

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