Answer: 11
Step-by-step explanation: if x is equal to 3 then you do 4 times 3 which is 12 then because y is equal to 1 you do 12 minus 1 which is 11
Answer:
1/12
Step-by-step explanation:
The probability of just picking up a 1 is 1/4 since there is only one 1 out of 4 total cards.
If you eliminate that 1 card, there are 3 cards left, and the probability of then picking a 4 becomes 1/3.
Multiplying these probabilities, we get 1/4 * 1/3 = 1/12 as the probability of picking up a 1, not returning it, and then picking a 4 afterward.
You do the math and that as a fraction its 25/100 :)
The answer to this problem should be 1.25
Answer:
Mean = 2
Standard deviation = 1.356
Step-by-step explanation:
We are given;
Probability of taxpayers that make mistakes when filling out forms: p = 0.08
Sample size; n = 25
In binomial distribution;
Means is;
μ = np
Thus;
μ = 25 × 0.08
μ = 2
Formula for standard deviation here is;
σ = √(np(1 - p))
σ = √(25 × 0.08(1 - 0.08))
σ = 1.356