Thomas thinks that 3 7/8 + 2 11/12 is pretty close to 5, but Lorinda thinks it is closer to 6. Todd disagrees with both of them
1 answer:
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Answer:
38.46%
Step-by-step explanation:
There are no names or marking that can make the calculator look different, so the order is not important. Then we should use a combination to solve this problem.
There are 40 calculators in one shipment, 37 of them good items and 3 of them are defect items. We need to choose 19 good calculators and 1 defect calculator. The number of ways to do that will be:
*
= 37!
= 53017895700
The number of possible ways to choose 20 calculators out of 40 calculators will be:
=
=137846528820
The chance will be: 53017895700/ 137846528820 = 0.3846= 38.46%
Answer:
→ 4.
→ 3.
→ 1.
→ 2.
Step-by-step explanation:
You need to:
Factor out 2 from , then you get the equivalent expression:
this matches with OPTION 4
Factor out 2 from , then you get the equivalent expression:
this matches with OPTION 3
Make the subtraction for , then you get the equivalent expression:
this matches with OPTION 1
Factor out 2 from , then you get the equivalent expression:
this matches with OPTION 2
Answer:
3.566%
Step-by-step explanation:
The probability formula for a poisson distribution is:
λ is the average of events
e is the euler's number
k is the number of events you want to know the probability
For this :
λ = 8.9 (on average the number of tickets is 8.9 per day)
k = 4 (you need to find the probability that exactly 4 tickets are written per day)