Question
1. A group of students were asked if they carry a credit card. The responses are listed in the table. Fill in the total cells
1. A group of students were asked if they carry a credit card. The responses are listed in the table. Fill in the total cells on your own paper and then answer the question below.
Class | Credit Card Carrier | Not a Credit Card Carrier | Total |
Freshman | 53 | 39 | |
Sophomore | 31 | 54 | |
Total |
If a student is selected at random, what is the probability that he or she owns a credit card given that the student is a freshman?
Round your answer to three decimal places.
2. The correlation between high school GPA (x) and freshman college GPA (y) for a sample of 200 university students was measured to have a regression equation of y = 0.4 + 1.0x.
What is the predicted freshman college GPA for someone with a high school GPA of 2.0? Round your answer to the nearest tenth.
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