Answer:
Possible outcomes=12
Step-by-step explanation:
We can see these two events are independent as Regina replaced marble after drawing one marble.
We can find possible outcomes by adding number of blue, red and yellow marbles.
Let us find probability of getting a blue marble on first draw.
Now we will find probability of getting yellow marble.
We can find probability of getting a blue marble and then yellow marble by multiplying both probabilities.
Therefore, probability of getting a blue marble and then yellow marble is 
.
Answer:
mean=81
SD=16.53
n=6
min=70
Q1=72
Median=75
Q3=80
max=114
Step-by-step explanation:
Answer:
21k^13
Step-by-step explanation:
when multiplying two variables that are raised to different powers you multiply the coefficient 7x3=21, then add the powers, 9+4=13 and you get 21k^13
Answer:
a) 106
b) 53
Step-by-step explanation:
Minimum required medical files can be found using the formula
n≥ p×(1-p) × 
where
- n is the minimum required medical files
- p is the estimated proportion for blood type b
- z is the corresponding z-score for two tailed 85% confidence level
- ME is the margin of error in the estimation
For the case (a)
If there is no preliminary estimate for p, then it is estimated as p=0.5
corresponding z-score for two tailed 85% confidence level is 1.44
and ME is 0.07.
Putting all in the formula;
n≥ 0.5×0.5 × 
≈ 106
For the case (b)
The only difference is p=
≈0.144
n≥ 0.144×0.856 × ≈ 53
