A sample of 65 observations is selected from one population.The sample mean is 2.67 and the population standard deviation is 0.75.A sample of 50 observations is selected from a second population.The sample means is 2.59 and the population standard deviation is 0.66. Conduct the following test of hypothesis using the .05 level of significance level.

Ho:The mean of 1 is equal to or less than the mean of 2

H1:The mean of 1 is greater than the mean of 2.

a.Is this a one-tailed or two-tailed test?

b.State the decision rule, reject if?

c.Compute the value of the test statistic theZ obtained.

d.What is your decision regarding the Ho?