The answer is D, there is no bias as Josh used random sampling.
Answer:
Step-by-step explanation:
you can divide both sides by 2.35 to get the right side to be 1:
Probability of getting heads: 1/2
Probability to get 2 heads out of three tries is: 1/8
Work: 1/2 x 1/2 x 1/2 = 1/8
X=4, y=28. 7x=2x+20, so subtract 2x from both sides and you’ll get 5x=20. Divide both sides by 5 and you’ll get x=4. Substitute this into the other equations and they will both equal 28.
No because irrational cant be a simple fraction and 9/15
is 0.6
so... it is not irrational
