Question

Approximately 10% of all people are left-handed ("11 little-known facts," 2013). Consider a grouping of fifteen people. Answer the questions below; for e-g, find probabilities using the binompdf and binomcdf commands as appropriate. Round the final answers to four decimal places.

Blank #1 (e): The probability that at least two are left-handed.

Blank #2 (f): The probability that at most three are left-handed.

Blank #3 (g): The probability that at least seven are left-handed.

Blank #4 (h): Seven of the last 15 U.S. Presidents were left-handed. Is this unusual? (yes or no)

Answer for blank # 1:
Answer for blank # 2:
Answer for blank # 3:
Answer for blank # 4:

Answer 1