Suppose a car dealership in town was interested in finding the average age of th

Question

Suppose a car dealership in town was interested in finding the average age of their custo specifically, those that purchase cars. Over the course of a year, the dealership randomly collected information on 200 sales including the age of the person purchasing the car, whether or not the car was new (46 were new), and their favorite member of One Direction (out of the original 5, obviously). mers, 1. What is the population under consideration? a. b. c. d. e. age of buyers of cars at this dealership cars and buyers buyers of cars at this dealership car buyers None of the above 2. What is the sample in this scenario? a. The 200 buyers of cars from this dealership b. All car sales during this one year time-frame c. The 46 buyers of new cars d. All cars ever sold by this dealership. The age of the buyers is a. Quantitative and discrete b. Quantitative and continuous c. Qualitative and discrete d. Qualitative and continuous 3. data. Could this data be used to calculate 95% confidence intervals for the average age of buyers of new cars or the proportion of sales that came from new car sales? a. Average age only; you cannot have a confidence interval for proportions b. Proportion only; you cannot have a confidence interval for averages c. Both; there would be enough information for both types of intervals IF the data collected 4. was given. d. Neither: we cannot create confidence intervals for the population, only for the sample. which of the following would be a correct interpretation of a 95% confidence interval for the average age of their customers? a, 95% of customers will have an age somewhere in this range. b. If this sampling process were repeated many more times, about 95% of the confidence 5, intervals built from each sample would contain the true average age of their custome c. There is a 95% probability that the true average age will fall in this range. d. In the future, 95% of customers will have an age somewhere in this range. rs

Explanation / Answer

1. Population: Option C is correct.

2. Sample: Option A is correct.

3. Option A is correct.

4. Option C is correct.

5. Option B is correct.

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.