Researchers determined that 60 Puffs tissues is the average number of tissues used during a cold.Suppose a random sample of 100 Puffs users yielded the following data on the number of tissues used during a cold: $\bar { x }$ = 52 and s = 22.Suppose the alternative we wanted to test was H₁: $\mu$ 1.6604. B) reject H₀ if t 1.9842 or Z

Question

Researchers determined that 60 Puffs tissues is the average number of tissues used during a cold.Suppose a random sample of 100 Puffs users yielded the following data on the number of tissues used during a cold: $\bar { x }$ = 52 and s = 22.Suppose the alternative we wanted to test was H₁: $\mu$ < 60.The correct rejection region for $\alpha$ = 0.05 is: A) reject H₀ if t > 1.6604. B) reject H₀ if t < -1.6604. C) reject H₀ if t > 1.9842 or Z < -1.9842. D) reject H₀ if t < -1.9842.

Quizplus · Accepted Answer

For a left-tailed test with α = 0.05 and df = 99, the critical value is approximately -1.6604. We reject H₀ if t < -1.6604.

Researchers Determined That 60 Puffs Tissues Is the Average Number xˉ\bar { x }xˉ

Researchers Determined That 60 Puffs Tissues Is the Average Number $\bar { x }$