The manufacturer of an over-the-counter heartburn relief medication claims that its product brings relief in less than
Question:
The manufacturer of an over-the-counter heartburn relief medication claims that its product brings relief in less than 3.0 minutes, on average. To be able to make this claim, the manufacturer was required by the FDA to present statistical evidence in support of the claim. The manufacturer reported that for a sample of 60 heartburn sufferers, the sample mean time to relief was 3.3 minutes and the population standard deviation was 1.1 minutes. Assuming the manufacturer's claim is correct, what is the probability of obtaining a sample with a mean time to relief greater than 3.3 minutes?
Use Excel or JMP to find probabilities and values. Do not round intermediate calculations. Round your final answer to four decimals. Use number format 0.0000 Do not use probability tables to find probabilities.