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Eight male and eight female college students who have credit cards were surveyed and asked their...

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Question

Basic Math

Eight male and eight female collegestudents who have credit cards were surveyed and asked their totalcredit card debt. The responses are given below in dollars:

Males

1000

2100

900

1200

1300

500

1400

700

Females

1300

500

2000

1800

1300

1000

2600

1400

1. Is this an observational study or a designed experiment?Explain your answer.

2. Is it reasonable to use Welch’s t-test? Explain youranswer.

3. Is there a difference in the mean credit card debt of malesand females? Use ? = 0.10. List out all 5 steps in thehypothesis testing and show your work.

Step 1

Step 2

Step 3

Step 4

Step 5

4. Construct a 90% confidence interval for the difference in themean credit card debt of male and female college students.

LowerBound:    

Upper Bound:  

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