A medical scientist thinks that the average basal temperature of (outwardly) healthy individuals has increased over time and is now greater than 98.6? F (37? C). To prove this, she has randomly selected 100 healthy individuals. If their mean temperature is 98.74? F with a sample standard deviation of 1.1? F, does this prove her claim at the 5 percent level? What about at the 1 percent level?