1.What is the null and alternative hypotheses? (One tailed? Two tailed?) (H 0 :=, H 1 : > 1.960 Fail to reject the null hypothesis

1.What is the null and alternative hypotheses? (One tailed? Two tailed?) (H₀:=, H₁: ><)

H₀:_m = _b OR_m = 54,365The average starting salary of MIS majors is ____ the average starting salary of all business majors

H_a:_{m b} OR_m 54,365 the average starting salary of MIS majors is ____ the average starting salary of all business majors

2.What is the level of significance (alpha level, level of risk, probability of committing type 1 error)?

= _____ the probability of saying that MIS majors make more, but they _______ actually make more

3.What is the appropriate test statistic? What is the critical value?

Use the z statistic because we have the _______________ standard deviation

Critical value_________

4.What is the decision rule?

Reject the null hypothesis (H₀) if ____ < -1.960____ > 1.960

Fail to reject the null hypothesis (H₀) if1.960 ____ 1.960

5.What is your decision?

a.What is the value of the test statistic?

z= (x-)/(/n)

_________=(59,642-54,365)/(15,400/75)

b.What is the p value? (find the p value by finding the z score of the mis majors salary on the z table) ________ probability of getting this result assuming that both the sample and population are the same before ever testing anything

c.What is the final decision?

Reject the null hypothesis because the z value of _______ is greater than the critical value of _______

6.Interpret your results in a way that you would tell your boss

We are 99.85% confident that MIS major graduates have a greater starting salary than the average business graduates starting salary.

2. You are testing that the mean speed of your cable Internet connection is more than three Megabits per second. State the null and alternative hypotheses.

Null means there is no difference between the sample and pop

Alternative is there is a difference between the sample and pop

Population dependent variable is your internet speed

It is dependent on the fact that it is yours therefore, the independent variable is you

H₀: 3 your internet speed is less than or equal to 3 mb per second

H_a: > 3 your internet speed is greater than 3 mb per second

Questions about Type 1 Error, Significance, and Alpha Levels

If I want to be 95% confident in my results, what is my Alpha level?__ _________

If =.01, what is the level of significance?__________

If the probability of committing Type 1 error is 5%, what is the level?__________

15. A group of doctors is deciding whether or not to perform an operation. Suppose the null hypothesis, H₀, is: the surgical procedure will go well. State the Type I and Type II errors in complete sentences.

16. A group of doctors is deciding whether or not to perform an operation. Suppose the null hypothesis, H₀, is: the surgical procedure will go well. Which is the error with the greater consequence? Type 1 error or Type 2 error and why?