Answer:
B
Step-by-step explanation:
it adds up to 185
Answer:
2 4
- _
8 16
Step-by-step explanation:
1 2
- X -
4 2
Or
1. 4
- X -
4. 4
Answer:
C
Step-by-step explanation:
The top part is 4.5 inches and teh bottom is 27 so it is 36
To solve this problem, we use the formula:
z = (x – u) / s
where z is the z score value which can be obtained from
the tables, x is the sample value, u is the mean = 6.3 min, and s is the std
dev = 2.2 min
at P value = 0.90, the z = 1.28, finding for x:
x = z s + u
x = 1.28 * 2.2 + 6.3
x = 9.116
at P value = 1.0, the z = 3.49, finding for x:
x = z s + u
x = 3.49 * 2.2 + 6.3
x = 13.978 ~ 14
Therefore the longest 10% calls last about 9.1 minutes to
14 minutes
Answer:
Step-by-step explanation:
