General direction:

a) State the null and alternative hypothesis for each problem.

b) Set the level of significance at 5%.

c) Calculate the test statistics. Write the name of the statistical test used in the computation.

Support your answer from the computation in MS Excel.

d) Interpret and analyze the results of the data.

e) Make a conclusion.

Question 1 1) A physiologist has conducted an experiment to evaluate the effect of hormone X on sexual behavior. Ten rats were injected with hormone X and 10 other rats received a placebo injection. The number of matings was counted over a 20-minute period. The results are shown in the table below.

Table 1: Data from hormone X experiment