The times for the mile run of a large group of male college students are approximately Normal with mean 7.11 minutes and standard deviation 0.74 minutes.
Use the 68–95–99.7 rule to answer the following questions.
(Start by making a sketch like Figure 3.8.)

1. What range of times covers almost all (99.7%) of this distribution?
A. 5.63 to 8.59
B. 4.89 to 9.33
C. 6.37 to 7.85
D. 2.22 to 12

Question

The times for the mile run of a large group of male college students are approximately Normal with mean 7.11 minutes and standard deviation 0.74 minutes. 
Use the 68–95–99.7 rule to answer the following questions. 
(Start by making a sketch like Figure 3.8.)

1.	What range of times covers almost all (99.7%) of this distribution?
A.	5.63 to 8.59
B.	4.89 to 9.33
C.	6.37 to 7.85
D.	2.22 to 12

konradzuse · Answer

2.	What percent of these men run a mile in less than 6.37 minutes?
A.	46.5%
B.	25%
C.	32%
D.	16%

konradzuse · Answer

I think #1 is B according to the rle...  I'm still trying to solve #2.

konradzuse · Answer

I think #2 is C since A isn't correct.

konradzuse · Answer

D apparently it was asking 4 the section from #1...  I'm glad they mentioned that...