Answer:
0.5244 is the answer.
Step-by-step explanation:
Given that the mean weight of males adult is 165 pounds.
Std deviation is 30 pounds
Sample size n = 35
Hence sample std deviation = 30/sq rt 35 = 5.071
Then X bar the mean of the sample follows a normal distribution
X bar : N(165, 5.071) by central limit theorem
Required probability =P(X<155)
When x =155, Z = 
Hence P(X<155) = P(Z<-1.972) = 0.5-0.4756
= 0.5244
Answer:

Step-by-step explanation:
(look at the picture)
The formula of a volume of a rectangular prism a × b × c:

We have two rectangular prisms.

Calculate the volume:

The volume of the irregular figure:

Answer:
2 Hours
Step-by-step explanation:
4/7 of an hour = 34.3 minutes.
34.3 minutes per 2/7
4/7 = 68.6 OR 1 hour 8 minutes.
6/7 = 102.9 OR 1 hour 42 minutes.
Then add half of 34.3 (17.15)
7/7 = 120.05. = 2 hours 0.5 seconds.