Answer:
it depends which way youre going, but 4 and -4 work.
Step-by-step explanation:
The probability is 1/462.
To find this, we will find the number of combinations of 5 country songs taken 5 at a time, 6 pop songs taken 0 at a time, and the total number of outcomes will be 11 songs taken 5 at a time:
formula I=Prt
450= (3000) r (3)
450=9000r 450/9000=9000r 0.05=r
Answer: 3
Step-by-step explanation: let first consider a single spin.
Number of possible outcomes = 7
Number of required outcome = 4
Probability = 4/7
For the 7 times will be = 4/7 × 7 = 4
Standard deviation = root(4/7 × 3/7)
Standard deviation = 0.495
Standard error = root(7) × 0.495 = 1.3
The expected value = 4 - 1.3 = 2.7
Therefore, the expected value is approximately = 3