Question

1. What is the level of significance ? state the null and alternate hypothesis.
2. Check requirements what sample distribution will you use? what assumptions are you making ? compute the sample test statistics and corresponding distribution value.
3. Find ( or estimated) the P- value. Sketch the sampling distribution and show the area corresponding To the P-value.
4. Based on your answer in part (a)to (c), will you reject or fail to reject the null hypothesis? Are the data statistically significant at the level α?
5. Interpret your conclusion in the context of application.

Note: for degree of freedoms d.f not in the student’s t- table, use the closes d.f that is smaller. In some situations, this choice of d.f may increase the value of P-value by small amount and therefore produce a slightly more “conservative” answer. Answer may vary due to rounding.

Q8. Student life: Employment Professor Jennings claim only 35% of the students at Flora College work attending school. Dean Renata thinks that the professor has underestimated the number of students with part time jobs. A random sample of 81 students shows that 39 have jobs. Do the data indicate that more than 35% of the students have jobs? (use a 5% level of significance)

Answer 1