A Weatherman Stated That the Average Temperature During July in Chattanooga

Multiple Choice

A weatherman stated that the average temperature during July in Chattanooga is 80 degrees or less.A sample of 32 Julys is taken.The correct set of hypotheses is

A) H₀: $\mu$ $\ge$ 80 H_a: $\mu$ < 80
B) H₀: $\mu$ $\le$ 80 H_a: $\mu$ > 80
C) H₀: $\mu$ $\neq$ 80 H_a: $\mu$ = 80
D) H₀: $\mu$ < 80 H_a: $\mu$ > 80