salaries come from a population that are normally distributed. You will create a QQ Plot. If you observe that the points are very close to the oblique line, then you can assume that the population is normally distributed. Copy and paste the graphs to your document. Graph ≫ QQ Plot ≫ Select the Columns. You can create them side by side or separately.
Data analysis part:
Perform a hypothesis test (t-test) to test the claim that the mean annual salary for men is more than $63750 ? Use alpha =5%. How to perform a hypothesis test? Men's annual salaries column ≫ Under
Perform, enter the value 63750 in Ho and in H1 select the greater than ( > ) sign ≫>> Compute.
Copy and paste the results to your Word document by clicking on Options and then Copy. For a hypothesis test, you need to show the following five steps.
The results generated in StatCrunch will show the null and the alternative hypothesis, the test statistic which is the value under T stat, and the P-value. You need to type the last two steps: step 4 and step 5 In step 4, decide to reject Ho or fail to reject Ho.
In step 5, type the interpretation of your decision in the context of the claim.
2. Perform a hypothesis test (t-test), to test the claim that the true mean annual salary for a woman is less than $60500. Use alpha =5%.
Repeat the same steps in question 1 . Choose the women's column, in Ho, enter 60500, and in H1 select
the appropriate sign.
3. Use alpha =0.05 to test the claim that the mean annual salary for men is higher than the mean annual salary for women? Would you support this claim? Explain!
How to test the difference between two population means?
Stat ≫ T-Stat ≫≫ Two Sample ≫ With Data ≫≫ Sample 1- select the men's salaries column >>
sample 2 - select the women's salaries column ≫> Perform: keep the value of the difference at
zero. In H1, select the greater than sign since we are testing if mu 1>mu 2≫ Compute Copy and paste the results to your Word document by clicking on Options and then Copy. Paste to your Word document. Make sure to type the remaining steps when performing a hypothesis test.
4. Test the claim that there is a strong positive correlation between shoe size and heights of men. Use alpha =0.05.
Stat > Regression ≫ Simple linear ≫ Select x and Y variables; make sure that you select
positive slope when performing the hypothesis test ≫> Compute. Copy and paste the
graphs and the output to your document. Complete the remaining steps of the
hypothesis test.
Copy and paste StatCrunch output to your word document and answer all questions. All of your work must be type written and submitted on HFC Online by clicking on
StatCrunch Project tab and then submit and upload the project either as a Word file or PDF file.
will create a QQ Plot. If you observe that the points are very close to the oblique line, then you can assume that the population is normally distributed. Copy and paste the graphs to your document. Graph >> QQ Plot >> Select the Columns. You can create them side by side or separately.
Data analysis part: 1. Perform a hypothesis test (t-test) to test the claim that the mean annual salary for men is more than $63750? Use alpha = 5%. How to perform a hypothesis test? Stat >>> T Stats >>> One Sample >>> With Data >>> Select the Men's annual salaries column>>> Under Perform, enter the value 63750 in Ho and in H1 select the greater than (>) sign >>> Compute. Copy and paste the results to your Word document by clicking on Options and then Copy. For a hypothesis test, you need to show the following five steps. The results generated in StatCrunch will show the null and the alternative hypothesis, the test statistic which is the value under T- stat, and the P-value. You need to type the last two steps: step 4 and step 5 In step 4, decide to reject Ho or fail to reject Ho. In step 5, type the interpretation of your decision in the context of the claim. 2. Perform a hypothesis test (t-test), to test the claim that the true mean annual salary for a woman is less than $60500. Use alpha 5%. Repeat the same steps in question 1. Choose the women's column, in Ho, enter 60500, and in H1 select the appropriate sign.
3. Use alpha = 0.05 to test the claim that the mean annual salary for men is higher than the mean annual salary for women? Would you support this claim? Explain! How to test the difference between two population means?
select the men's salaries column>> sample 2 select the womens salaries column >>> Perform: keep the value of the difference at zero. In H1, select the greater than sign since we are testing if 1 >2 >>> Compute Copy and paste the results to your Word document by clicking on Options and then Copy. Paste to your Word document. Make sure to type the remaining steps when performing a hypothesis test 4. Test the claim that there is a strong positive correlation between shoe size and heights of men.Use alpha =0.05.
variables; make sure that you select positive slope when performing the hypothesis test >> Compute. Copy and paste the graphs and the output to your document. Complete the remaining steps of the hypothesis test.
Copy and paste StatCrunch output to your word document and answer all questions. All of your work must be type written and submitted on HFC Online by clicking on StatCrunch Project tab and then submit and upload the project either as a Word file or PDF file.
