1. true or false. In most situations in the “real word”, we know the value of the population proportion. A. True B. False 2. True or False. Statistics inference is the art and science of drawing conclusions about a population on the basis of observing only a small subject of that population. A. True B. False

Smoking versus Running Red Lights Student 1. Chris 2. Ada 3. Spencer 4. Stephen 5. Alan 6. Victoria 7. Joseph 8. Kristen 9. Rachael 10. Sue The results of an anonymous survey of 10 students about whether they smoke and whether they run red traffic lights is given in the table to the right Summarize the data in a two-way table. Run lights? D Yes No Yes No No Smoke? No No Yes No Yes Yes Yes Summarize the data by completing the following table. Data Summary Run Lights Don't Run No Lights Total No Yes No Yes Smoke Yes Yes Yes Don't Smoke Total

Which of the following is not true about the process of​ statistics?       Question content area bottom Part 1 Choose the correct answer below.     A. When the results from a sample are extended to the​ population, it is called inference.   B. If data are not collected​ properly, the conclusions that are drawn will be meaningless.   C. Data are typically collected from a sample because it is too difficult and expensive to collect data from an entire population.   D. The first step in the process of statistics is to collect the data.

partners. This explains the strange phenomenon observed in part (a). The data given is the expected points for a football team with first down and 10 yards to go from various points on the field. In the given table, x| stands for the number of yards from the goal and y stands for the y y 6.041 10. 55 1.538 15 4.572 65 0.923 x= 500, x2 = 33,250, y = 20.798, 3.721 0.236 25 75 expected points. (Note: - 0.637 - 1.245 35 3.167 85 xy = 404.21.) 45 2.482 95 a. Calculate the coefficient of correlation. Does there appear to be a linear correlation? b. Find the equation of the least squares line. c. Use the answer from part (b) to predict the expected points when a team is at the 50-yd line. a. The coefficient of correlation r is (Do not round until the final answer. Then round to three decimal places as needed.) teb lo Does there appear to be a linear correlation? A. No, there is no linear correlation between the data points. B. Yes, the data points show linear correlation. b. The equation of…