3rd option.
at least shows that the number can be equal to 2, and also that 2 should be the smallest possible value of the number.
Answer:
1
Step-by-step explanation:
Rounding 5 to the nearest tenth would give you 1 and adding 1 to 9 would give you 10 which would 10 tenths which is 1
2.65/5=.53(price per pound)
.53*2lbs=1.06
a 2 lb bag will cost $1.06
Answer:
Mean = 1.57
Variance=0.31
Step-by-step explanation:
To calculate the mean and the variance of the number of successful surgeries (X), we first have to enumerate the possible outcomes:
1) Both surgeries are successful (X=2).

2) Left knee unsuccessful and right knee successful (X=1).

3) Right knee unsuccessful and left knee successful (X=1).

4) Both surgeries are unsuccessful (X=0).

Then, the mean can be calculated as the expected value:

The variance can be calculated as:

Answer:
A
Step-by-step explanation:
because it is probability