One-tailed test of null hypothesis

Reference no: EM13108550

Please show the steps how to solve the following problem:

Grade for First Use of cigarettes

Males Females
Mean=4.90 Mean=4.76
Sy=1.74 Sy=1.73
N=150 N=169

Using data on average school grade for first use. Use the t test to conduct a one-tailed test of the null hypothesis, assuming that the average grade is higher for males than for females, Set alpha at .05. What can you conclude? Would your conclusion have been different if you used a two-tailed test?

Reference no: EM13108550

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