Ten students begin college at the same time. the probability of graduating in four years is 63%. which expanded expression shows the first and last terms of the expression used to find the probability that at least six will graduate in four years?

(106)×(0.63)6×(0.37)4++(1010)×(0.63 )10×(0.37)∘=0.706

(105)×(0.63)5×(0.37)5++(1010)×(0.63 )10×(0.37)∘=0.88

(100)×(0.63)∘×(0.37)10++(106)×(0.63 )6×(0.37)4=0.540

(100)×(0.63)∘×(0.37)10++(105)×(0.63 )5×(0.37)5=0.293

the answer is a!

Step-by-step explanation:

Answer is option A

Step-by-step explanation:

Let X be the number of students that graduate in four years. Let's suppose that the academic results of each student is indepent from other students. If we consider the event "To graduate in 4 years" as a success, we can model X as a binomial random variable. Then, the probability of having k students that graduate in 4 years is

Since we want to know the probability that X is greater or equal to 6, we calculate the following

which is the option A

10

step-by-step explanation:

7+3=10

total amount of money that he should pay if he has not used his duty free exemption is $98

step-by-step explanation:

given a united states citizen returning to the states declares the following items at the customs office: 3 shirts at $8.50 each 2 dresses at $27.50 each 1 pair of gold cuff links at $17.50 per pair. we have to find how much he pay

cost of 3 shirts if one cost at $8.50 is

cost of 2 dresses if one cost at $27.50 is  

cost of 1 pair of gold cuff at $17.50

so, total amount of money that he should pay if he has not used his duty free exemption is   $25.5+$55+$17.50=$98