The amount of water consumed each day by a healthy adult follows a normal distribution with a mean of 1.54 liters. A sample of 10 adults after the campaign shows the following consumption in liters: 1.35 1.68 1.76 2.00 1.84 1.84 1.50 1.82 1.86 1.60 At the 0.05 significance level, can we conclude that water consumption has increased? Calculate and interpret the p-value.
(b) State the decision rule for .05 significance level.
(c) Compute the value of the test statistic.