In the final days of life, some individuals experience terminal delirium. Sympto

Question

In the final days of life, some individuals experience terminal delirium. Symptoms include confusion, restlessness, agitation, and day-to-night reversal. The condition is distressing to both the dying individual and family members. Often, family members ask hospice workers how long a dying loved one will experience terminal delirium.

Suppose a researcher in Johnston Hospice Organization designs a study to estimate the number of days patients spend in terminal delirium. She selects 185 patients with terminal delirium at the end of life. Based on the 185 individuals in the sample, the mean duration of terminal delirium is 1.2 days and the sample standard deviation is 3.18 days. Determine the degrees of freedom, df, in the sample standard deviation of this study.

df=

Explanation / Answer

Solution :

Given that .

s = 3.18

sample size = n = 185

Degrees of freedom = df = n - 1 = 185 -1 = 184

The degrees of freedom in the sample standard deviation of this study is 184 .

df = 184

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