Answer:
17.5
Step-by-step explanation:
11 + 24 = 35 /2
Answer:
C.60
Step-by-step explanation:
Just multiply 300 by 9 and then divide by 45.
Answer:
20
Step-by-step explanation:
Thanks
Answer:
0.0039 is the probability that the sample mean hardness for a random sample of 12 pins is at least 51.
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 50
Standard Deviation, σ = 1.3
Sample size, n = 12
We are given that the distribution of hardness of pins is a bell shaped distribution that is a normal distribution.
Formula:
Standard error due to sampling =

P(sample mean hardness for a random sample of 12 pins is at least 51)
Calculation the value from standard normal z table, we have,
0.0039 is the probability that the sample mean hardness for a random sample of 12 pins is at least 51.
Answer:
30.76923077 or (approx: 30.77)
Step-by-step explanation:
-has 3 1/4 cups
-drinks 1 cup
(3 1/4-1=2 1/4)
3 1/4=100% (3 1/4 divided by 1=3.25)
1 =x% (100 divided by 3.25)
Approx 30.77%