A research claims that 20-year-old women on a special diet will have an average weight of 110 pounds. a sample of 15 women has an average weight of 112.5 pounds and a standard deviation of 5 pounds. at , can the claim be rejected?
step 1: state the null and alternative hypothesis.
step 2 : significance level
step 3 : compute the test statistic
step 4 : state decision rule
step 5 : state the conclusion
