Distance run by each member
of the Chicago race club
8
7
6TH
6
Col
5
4
As
3
2
MY
1
Col
0
0
10
15
20
Number of kilometers
MY
In which interval is the median distance?
Pro
Write an algebraic expression to match each statement a. four less than 8 times a number b. twice the difference of a number and six c. nine from a number squared
Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?