Answer:
Step-by-step explanation:
- calculate the mean of your data set(x bar)
- Subtract each data value from the mean and calculate the square
- add all of these squares
- divide by n-1 (For a sample) to get the variance
If you’re calculating the variance of a population(not sample) divide by N.
Answer:
The probability of selecting randomly 6 packets such that the first 4 contain cocaine and 2 not is 0.3522.
Step-by-step explanation:
Probabilities of selecting 4 packets with the ilegal substance:
= 
Combinassions possible= 1365
Probabilities of selecting 2 packets with white powder:
= 
Combinations possible= 10
Probabilities of selecting 6 packets from the totality of them:
= 
Combinations possible= 38760
The probability of picking 4 with the substance and 2 with only white powder is:
= 0.3522
I hope this answer helps you.
Answer:
hey can you show me the pic because the question doesn't make any sense
The answer would be 4. if the cousin could do it at 7 hours and now when they work with the cousin it finishes in three that means that the person takes away 4 hours so if they were to work alone that would be 4 hours, hope its right!
Answer:
R=√a/3
now put square on both side to remove square root
(√A/3)²=R²
A/3=R²
so we get
A=3(R²)
plz mark me brainest
