Slimming. A slimming center claims that by joining their latest slimming program for a month, a person can have an average weight loss of 5kg. To justify this, a group of sampled people’s different weights before and after joining the program were recorded (Before–After).

a) State the null and alternative hypotheses.

b) The P-value from the test is 0.37. Does this provide any evidence that their slimming program works?

c) From part

b, what can you tell, if anything, about the mean difference in the sample weights?