Catching a Cold Is your chance of getting acold influenced
Chapter 14, Problem 59(choose chapter or problem)
Catching a Cold Is your chance of getting acold influenced by the number of social contacts youhave? A study by Sheldon Cohen, a psychology professor at Carnegie Mellon University, seems toshow that the more social relationships you have, theless susceptible you are to colds.21 A group of 276healthy men and women were grouped according totheir number of relationships (such as parent, friend,church member, neighbor). They were then exposed toa virus that causes colds. An adaptation of the resultsis shown in the table.Number of RelationshipsThree or Fewer Four or Five Six or MoreCold 49 43 34No Cold 31 57 62Total 80 100 96a. Do the data provide sufficient evidence to indicatethat susceptibility to colds is affected by the numberof relationships you have? Test at the 5%significance level.b. Based on the results of part a, describe the natureof the relationship between the two categoricalvariables: cold incidence and number of socialrelationships. Do your observations agree with theauthors conclusions?
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