Two dairy farmers (farmer1 and farmer2) accidentally allowed some of their cows to graze in a pasture containing weeds that would contaminate the milk from their herds. farmer1 has 5 cows and estimates that there's a 10% chance of a cow grazing on some of the flavorful weeds. farmer2 has 7 cows and estimates that there's a 20% chance of a cow grazing on some flavorful weeds.

1.What is the probability that only one cow of farmer1 ate weed?

• 0.41
• 0.92
• 0.33
• 0.59

2.What is the standard deviation of the number of cows of farmer2 who ate weed?

• 7
• 1.4
• 1.12
• 1.06

3.What is the probability that none of the 12 cows ate the weed?

• 0.33
• 0.21
• 0.59
• 0.12

4.Considering all the 12 cows how many would you expect to eat weed?

• 12
• 1.4
• 0.5
• 1.9

5.Considering all the 12 cows, what is the standard deviation of the number of cows who ate weed?

• 1.12
• 1.57
• 1.25
• 1.32