The Manufacturer of an Over-The-Counter Heartburn Relief Mediation Claims That

The manufacturer of an over-the-counter heartburn relief mediation claims that it product brings relief in less than 3.5 minutes, on average. To be able to make this claim the manufacturer was required to present statistical evidence in support of the claim. The manufacturer reported that for a sample of 50 heartburn sufferers, the mean time to relief was 3.3 minutes and the standard deviation was 1.1 minutes. Assume that time is normally distributed.
-How much evidence do we have that the claim is true?

A) Little or no evidence
B) Some evidence
C) Strong evidence
D) Very strong evidence
E) Extremely strong evidence