Question

Nationally, the proportion of red cars on the road is 0.12. A statistically

minded fan of the Philadelphia Phillies (whose team color is red) wonders if Phillies fans are
more likely to drive red cars. One day during a home game, he takes a random sample of 210
cars parked at Citizens Bank Park (the Phillies home field), and counts 35 red cars.
(a) State appropriate hypotheses for performing a significance test. Be sure to define the
parameter of interest.

Answer 1

Null hypothesis: proportion of red Phillies cars is 0.12.

Alternate hypothesis: proportion of red Phillies cars is not 0.12.

Explanation: