If a coin is balanced so that p(Heads) = p(Tails) = 1/2, then ...

[lbcchick]

If a coin is balanced so that p(Heads) = p(Tails) = 1/2, then which of the following outcomes is least likely to occur?
 
  A) 9 Heads in 12 tosses (75 Heads)
  B) 12 Heads in 16 tosses (75 Heads)
  C) 30 Heads in 40 tosses (75 Heads)
  D) 75 Heads in 100 tosses (75 Heads)

Question 2

A researcher plans to conduct a research study comparing two treatment conditions with a total of 20 scores in each treatment. Which of the following designs would require only 20 participants?
 
  A) independent-measures design
  B) repeated-measures design
  C) matched-subjects design
  D) between-measures design

[amcvicar]

Answer to Question 1

A

Answer to Question 2

B

[lbcchick]

Gracias!

[aliotak]

Thanks for the timely response, appreciate it