After collecting all of the data, you determine that the finishing times are normally distributed with a mean of 2.8 hours and a standard deviation of .4 hour. a. what is the probability that a randomly chosen athlete completed the walk between 2 and 3.2 hours?
b. what is the probability that two randomly chosen athletes completed the walk in 3.6 hours or more?
c. what is the probability that four randomly chosen athletes completed the walk between 2 and 2.8 hours?

To describe a sequence of transformations that maps triangle abc onto triangle a"b"c", a student starts with a reflection over the x-axis. how should the student complete the sequence of transformations to map triangle abc onto triangle a"b"c"? plz

An appliance store sells lamps at $95.00 for two. a department store sells similar lamps at 5 for $250.00. which store sells at a better rate

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered