Question

An experiment consists of tossing an unfair coin (49% chance of landing on heads) a specified number of times and recording the outcomes.

(a) What is the probability that the first head will occur on the second trial? (Use 4 decimal places.)

Does this probability change if we toss the coin three times? What if we toss the coin four times?

The probability changes if we toss the coin four times, but does not change if we toss the coin three times.The probability changes for both three and four tosses.     The probability changes if we toss the coin three times, but does not change if we toss the coin four times.The probability does not change for either three or four tosses.

What probability distribution model do we use to compute these probabilities?

poissongeometric     normalbinomial

(b) What is the probability that the first head will occur on the fourth trial? after the fourth trial? (Use 4 decimal places.)

P(4)
P(n > 4)

Answer 1