The credit scores for 12 randomly selected adults who are considered high risk barrowers before and two years after they attend a personal finance seminar are given in Excel file under CREDIT_SCORE sheet.

You will run a significance test to check if there is enough evidence to support the claim that the personal finance seminar helps adults increase their credit scores.

Youll use = 0.01 for significance test.

a. Write out the null and alternative hypothesis associated with the research question. (2p)

b. What type of statistical test will you use to answer the proposed research question? (Note: Is this a z-test or a t-test for independent or dependent samples) (2p)

c. What is the critical value at the 0.01 level of significance? Be sure and include whether this critical value is a z or t value and, if appropriate, include the degrees of freedom associated with this statistical test. (4p)

d. What is the standardized test statistic? (4p)

e. At 0.01 significance level what decision should be made about the null hypothesis? In other words, should you reject or retain the null hypothesis? (3p)

g. Provide a brief conclusion regarding your findings. Use your powerpoint lecture slides for writing out the interpretation of your results. (5p)

Excel output (10p)