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4 Questions returned
No. & Date AskedQuestion
# 493 :: 11/4/08
Question 493 has been Answered
On a police sergeants exam, the historical mean scored was 80 with a standard deviation of 20. Four offiers scored 195,175,191, and 189 respectively. . . .

Empirical Rule, Z-Score, Unusual Event, Percent Score

# 401 :: 9/20/08
Question 401 has been Answered
A woman wrote to DearAbby and claimed that she gave birth 308 days after a visit from her husband, who is in the Navy. Lengths of pregnancies have a . . .

Z-Score, Unusual Event

# 17 :: 10/29/07
Question 17 has been Answered
Having obtained the z score and then derived the percentage... what does the percentage tell you?. . .

Unusual Event, Z-Score

# 13 :: 10/23/07
Question 13 has been Answered
How unusual is this event (Z-Score)? A department store, on average, has daily sales of $28,707.47. The standard deviation of sales is $1000. . . .

Z-Score, Unusual Event