Q14: A study collects breast cancer survivor’s age. Data are summarized below. A
ID: 3021553 • Letter: Q
Question
Q14: A study collects breast cancer survivor’s age. Data are summarized below. Answer Q14 and Q15 using the summary results. Note: Latina (Latina=1) and Anglo (Latina=0).
Group
N
Mean
Standard deviation
All (Latina and Anglo)
176
51.03
11.06
Latina
80
47.34
10.52
Anglo
96
54.11
10.60
Which ethnicity has a lower mean onset age?
Based on the summary table in Q14, what proportion of breast cancer survivors is Latina?
If a 95% CI constructed using a t distribution does NOT cover 0, would the 95% CI constructed using a standard normal distribution based on the same data cover 0?
yes
No
Group
N
Mean
Standard deviation
All (Latina and Anglo)
176
51.03
11.06
Latina
80
47.34
10.52
Anglo
96
54.11
10.60
Explanation / Answer
the lower mean onset age was latina the proportion of brest cancer survivors of latina is 45% no
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