Anew weight-watching company, weight reducers international, advertises that thosewho join will lose, on the average, 10 pounds the first two weeks with a standard deviationof 2.8 pounds. a random sample of 50 people who joined the new weight reduction program revealed the mean loss to be 9 pounds. at the .05 level of significance, can we conclude that those joining weight reducers on average will lose less than 10 pounds? a. state the decision rule for the 0.05 significance level. reject h sub zero if z < . compute the value of the test statistic. z value . determine the p-value.