Let x represent the scores. With mean and standard deviation given,
The Empirical rule states that
1) About 68% of the x values lie between 1 standard deviation below and above the mean
2) About 95% of the x values lie between 2 standard deviation below and above the mean
3) About 99.7% of the x values lie between 3 standard deviation below and above the mean
If we consider this rule, then the percentage of scores that fall within 3 standard deviation (-3 to +3) is 99% because this is closer to 99.7%
1. Observe question
2. Employ Point-Slope formula
(y2 - y1)/(x2 - x1 )=
(-10-9)/(-6-9) =
-19/-15=
19/15
Slope: 19/15
Answer:
There should be 2 teachers and 21 students on each bus.
Step-by-step explanation:
There are 4 terms in the expression.
Terms are each of the entities.
4x, + 3y , -12x, +5
Answer:
1:18
Step-by-step explanation:
54/3 = 18 3/3 = 1
18 to 1
18:1
1:18