People using a popular internet search engine to do research on buying a new car were randomly selected to answer a survey question on if they plan on
buying an electric car in the next 5 years. The results for users in 3 states in included below:
Table: Interest in Purchasing Electric Vehicle by State
California
New York
Texas
Interested
Not Interested
Total
84
189
76
273
213
(a)
289
224
(b)
(d)
1. Estimate the number of those surveyed in Texas that you think would be interested in buying an Electric Car. State what this value is and enter it in for
(a) for your work. Explain why you made this estimate (it is ok to guess).
2. Use the value you found in (a) to calculate the counts in (b), (c), and (d).
Leave your answer as an unreduced fraction. Imagine we randomly select one individual represented in the table you made:
3. What is the probability the person is interested in buying an electric vehicle?
4. What is the probability the person is interested in buying an electric vehicle AND from Texas?
5. What is the probability the person is interested in buying an electric vehicle OR from Texas?
6. What is the PERCENT probability the person is interested in buying an electric vehicle given they are from Texas?
Total
(c)
626
7. What is the PERCENT probability the person is interested in buying an electric vehicle given they are from California?
8. Who might be able to use these results to make decisions? What decision can they make with this information?