A friend is tested to see whether he can tell bottled water from tap water. There are 30 trials (half with bottled water and half with tap water), and he gets 18 right.

a. Pick the correct null hypothesis:

i. p = 0.50
ii. p = 0.60

iii.p = 0.50

iv. p = 0.60

b. Pick the correct alternative hypothesis:

i. p = 0.50

ii. p = 0.875

iii. p > 0.50

iv. p = 0.875