A Weatherman Stated That the Average Temperature During July in Chattanooga

question 142

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: \(\mu\) 80 H_a: \(\mu\) < 80
• B)H₀: \(\mu\) 80 H_a: \(\mu\)> 80
• C)H₀: \(\mu\) \(\neq\)80 H_a: \(\mu\) = 80
• D)H₀: \(\mu\) < 80 H_a: \(\mu\) > 80