W12 Reading Quiz: Probability and Confidence Intervals: Math for the Real World 1. Did you complete the online lesson by watching the videos, reading the text in its entirety, and working through the interactive practice problems? - Yes, I completed the online lesson. 2. Last year, 838 of the 1,377 residents in a small town owned more than one vehicle. Use this historical data to find the probability that a randomly selected resident in this small town owns more than one vehicle. Please round to two decimal places and enter your answer as a number between 0 and 1. - 0.61 3. Last year, 405 of the 1,279 residents in a small town were under 18 years of age. Use this historical data to find the probability that a randomly selected resident in this small town is under 18 years of age. Please round to two decimal places and enter your answer as a number between 0 and 1. - 0.32 4. Use the following probability model to answer the question. Event: For each adult resident in a city we ask how many vehicles they own Find the probability that an adult resident has 3 or more vehicles. Give your answer as a number between 0 and 1. - 0.17 5. Use the following probability model to answer the question. Event: For each adult resident in a city we ask how many vehicles they own. Find the probability that an adult resident has 3 or more vehicles. Give your answer as a number between 0 and 1. - 0.04 6. You asked a sample of individuals what kind of animal is their favorite. Of the 167 individuals in your sample, 52 of them answered "dog". Which of the following gives a 95% confidence interval for the true percentage of individuals whose favorite animal is a dog. - (23.4%, 38.9%) 7. A news article reports that 52% of voters plan to vote for Vicente and 48% of voters plan to vote for Raul. The margin of error is 3%. Is there enough statistical evidence to say that Vicente is in the lead? - No. Because the confidence intervals overlap we do not have enough evidence to say the parameters are different.

Probability And Confidence Intervals Math For The Real World

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