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3) Do people drive more slowly on tree-lined street? In the following table x is a random variable representing the number of tree per mile of road on randomly selected streets with a 25 mph speed limit in a major city while y represents the average speed of cars in mph sampled over a one-hour period at the same time of day 47 25 12 30 me to nuo 35 y 25 50 44 45

3) Do people drive more slowly on tree-lined street? In the following table x is a random variable representing the number of tree per mile of road on randomly selected streets with a 25 mph speed limit in a major city while y represents the average speed of cars in mph sampled over a one-hour period at the same time of day 47 25 12 30 me to nuo 35 y 25 50 44 45

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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3) Do people drive more slowly on tree-lined street? In the following table x is a random variable representing the number of tree per mile of road on randomly selected streets with a 25 mph speed limit in a major city while y represents the average speed of cars in mph sampled over a one-hour period at the same time of day 47 25 12 30 me to que 35 y 25 50 44 45 ent brit (d a) Draw a Scatter Plot Diagram of the data. Remember to label the axes appropriately and nsbnee sigmse eris bnit or slummot choose a consistent scale. cins2 oinutonomodgo2 nemdeent b) Based on the Scatter Plot Diagram, would you estimate the correlation coefficient to be positive, close to zero, or negative: 4) Professor Wan is in charge of a program to prepare people for a high-school equivalence exam. Records show that 70% of the students need work in math, 60% need work in English, and 50% need work in both areas. Use the appropriate formula to compute the probability that a student selected at random will need math or need English. yiidsdong er 5) An animal shelter has a 65% adoption rate for puppies. Of all puppies in the shelter, 62% live to be 7 years or older. Of the puppies who are adopted, 75% live to be 7 years or older. What is the probability that a randomly selected puppy in the shelter will get adopted and live 7 or more years? ( 10)9 des
Transcribed Image Text:3) Do people drive more slowly on tree-lined street? In the following table x is a random variable representing the number of tree per mile of road on randomly selected streets with a 25 mph speed limit in a major city while y represents the average speed of cars in mph sampled over a one-hour period at the same time of day 47 25 12 30 me to que 35 y 25 50 44 45 ent brit (d a) Draw a Scatter Plot Diagram of the data. Remember to label the axes appropriately and nsbnee sigmse eris bnit or slummot choose a consistent scale. cins2 oinutonomodgo2 nemdeent b) Based on the Scatter Plot Diagram, would you estimate the correlation coefficient to be positive, close to zero, or negative: 4) Professor Wan is in charge of a program to prepare people for a high-school equivalence exam. Records show that 70% of the students need work in math, 60% need work in English, and 50% need work in both areas. Use the appropriate formula to compute the probability that a student selected at random will need math or need English. yiidsdong er 5) An animal shelter has a 65% adoption rate for puppies. Of all puppies in the shelter, 62% live to be 7 years or older. Of the puppies who are adopted, 75% live to be 7 years or older. What is the probability that a randomly selected puppy in the shelter will get adopted and live 7 or more years? ( 10)9 des
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