Use this information to answer all the questions on this page.

There may be a cure for male pattern baldness using the blood pressure drug Minoxidil.

A group of males was randomly assigned to two groups. One group received topical applications of the drug; the other group received applications of an identical looking placebo.

The date is summarized in the table.

Experimental Groups	Sample Size	Count of patients with Hair growth
Minoxidil	310	100
Placebo	100	25

Does the Minoxidil group have a significantly larger percentage of patients with hair growth than the placebo group? Carry out a test of significance at the 5% level to test if Minoxidil improves hair growth.

What are the null and alternative hypotheses?

Select one:

a.H₀: p₁ = p₂; H_A: p₁ < p₂

b.H₀: p₁ = 32%; H_A: p₁ < 25%

c.H₀: p₁ = 32%; H_A: p₂ = 25%

d.H₀: p₁ = p₂; H_A: p₁ > p₂