A Student Wants to Determine If Pennies Are Really Fair

Multiple Choice

A student wants to determine if pennies are really fair, meaning equally likely to land heads up or tails up. He flips a random sample of 50 pennies and finds that 28 of them land heads up. What are the appropriate null and alternative hypotheses?

A) H₀: p ≥ 0.5, H_{a : p < 0.5}
B) H₀: p ≤ 0.5, H_{a : p ≠ 0.5}
C) ​H₀: p = 0.5, H_{a : p > 0.5}
D) H₀: p ≥ 28, H_{a : p < 28}