Answer:
10x13 is 130
130x8 is 1040
Since the door is part of the wall, but won't be painted, you subtract 1040-21 which is 1019
Answer:
The probability of finding a sample mean less than 18 hours is 0.0082
Step-by-step explanation:
To find the probability of finding a sample mean less than 18 hours, we need to calculate the z-score of this sample mean 18. And the probability of finding a sample mean less than 18 hours is P(z<z(18)).
Z-score can be calculated as follows:
z(18)=
where
- X is the sample mean (18 hours)
- M is the average hours dentists spend per week on fillings (20 hours)
- s is the standard deviation (10 hours)
- N is the sample size (144)
Putting the numbers, we get:
z(18)=
Using z- table we can find that P(z<z(18)) = 0.0082
Answer:
100
Step-by-step explanation:
200-300= -100 But the negative of a negative is a positive so the answer is: 100.
The answer is 22K/cubic ft
Answer:
28 ft
Step-by-step explanation: