A health psychologist was interested in the effects of vitamin supplements on the immune system. Three groups of adults were exposed (in a highly ethical way) to the cold virus; one group took no supplements for a week before exposure, another had vitamin C supplements, and a third had multivitamins (excluding C). The severity of the cold was measured as a percentage (0% = not contracted, 100% very severe symptoms). The psychologist also measured the number of cigarettes that each person smoked per day, as smoking suppresses the immune system. The psychologist was interested in the differences in the severity of the illnesses across different vitamin groups accounting for cigarette usage. What technique should be used to analyse these data? 

A. Two-way repeated-measures ANOVA 

B. Two-way independent ANOVA 

Home prices in Stanislaus county have a mean of \( \$ 266 K \) and a standard deviation of \( \$ 16 K \) . According to the empirical rule, what would be the upper and lower limit of the house prices for \( 99.7 \% \) of the houses? 

Select one: 

a. \( \$ 250 K \) and \( \$ 282 K \) 

b. \( \$ 234 K \) and \( \$ 298 K \) 

c. \( \$ 218 K \) and \( \$ 314 K\) 

Health care issues are receiving much attention in both academic and political arenas. A sociologist recently conducted a survey of citizens over \( 60 \) years of age whose net worth is too high to qualify for Medicaid. The ages of \( 25 \) senior citizens were as follows: 

60 65 71 76 87 

61 66 73 76 89 

62 68 74 81 90 

63 69 74 81 95 

64 69 76 83 96 

1. Determine the median of the senior ages.

Health care issues are receiving much attention in both academic and political arenas. A sociologist recently conducted a survey of citizens over \( 60 \) years of age whose net worth is too high to qualify for Medicaid. The ages of \( 25 \) senior citizens were as follows: 

\( 6065717687 - 6166737689 - 6268748190 - 6369748195 - 6469768396 \) 

Determine the interquartile range of the ages of the senior citizens.

Health care issues are receiving much attention in both academic and political arenas. A sociologist recently conducted a survey of citizens over \( 60 \) years of age whose net worth is too high to qualify for Medicaid. The ages of \( 25 \) senior citizens were as follows: 

\( 6065717687 - 6166737689 - 6268748190 - 6369748195 - 6469768396 \) 

1. Determine the median of the senior ages.

Health care issues are receiving much attention in both academic and political arenas. A sociologist recently conducted a survey of citizens over \(60\) years of age whose net worth is too high to qualify for Medicaid. The ages of \(25\) senior citizens were as follows: 

\(6065717687 - 6166737689 - 6268748190 - 6369748195 - 6469768396\) 

Determine the interquartile range of the ages of the senior citizens.