Please read this assignment and then read my question under results. I need help finding the 95% confidence interval. Thanks. Choose a sampling technique to record some data. Recall these are in Chapter 1. Tell me how you will be collecting the data. 2. Pick a car color before you start to collect any data. Use this list as your possible choices: white, black, blue, green, red, brown, gray, or silver. You must use one of these as your chosen choice. Don't make up your own. 3. Collect at least 35 data values from cars using your chosen sampling technique from Part 1. Record the color of the 35 cars or more that you sampled. Be sure to explain your sampling process. Did you pick them all at one time? Where did you collect your data? Explain how you implemented your sampling technique. 4. Based on your sample if you chose a car at random, discuss the probability that it would be your chosen color. Be sure to state the probability in percentage form for your chosen car color based on your sample data. Round your percentage to the nearest tenth. 5. Do a web search on the percentage of cars in the U.S. with your chosen color and record that value. Use your sample proportion for your car color to calculate a 95% confidence interval. Does the population value you found online fall inside this confidence interval? What could you do to improve your confidence interval when compared to the population parameter? Is there any way you could have chosen your sample differently to obtain better results for the confidence interval? Results: I chose the color red. I tallied and 3 of 35 cars that I counted were red. That calculates to be 8.6%. How do I figure the 95% confidence interval?
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Please read this assignment and then read my question under results. I need help finding the 95% confidence interval. Thanks. Choose a sampling technique to record some data. Recall these are in Chapter 1. Tell me how you will be collecting the data. 2. Pick a car color before you start to collect any data. Use this list as your possible choices: white, black, blue, green, red, brown, gray, or silver. You must use one of these as your chosen choice. Don't make up your own. 3. Collect at least 35 data values from cars using your chosen sampling technique from Part 1. Record the color of the 35 cars or more that you sampled. Be sure to explain your sampling process. Did you pick them all at one time? Where did you collect your data? Explain how you implemented your sampling technique. 4. Based on your sample if you chose a car at random, discuss the probability that it would be your chosen color. Be sure to state the probability in percentage form for your chosen car color based on your sample data. Round your percentage to the nearest tenth. 5. Do a web search on the percentage of cars in the U.S. with your chosen color and record that value. Use your sample proportion for your car color to calculate a 95% confidence interval. Does the population value you found online fall inside this confidence interval? What could you do to improve your confidence interval when compared to the population parameter? Is there any way you could have chosen your sample differently to obtain better results for the confidence interval? Results: I chose the color red. I tallied and 3 of 35 cars that I counted were red. That calculates to be 8.6%. How do I figure the 95% confidence interval? |
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