Mathematics, 23.09.2019 17:10 katykatmeelee
The following observations are given for two variables. x y 2 7 6 10 9 13 11 18 11 21 12 25 7 12 4 7 a. compute the sample covariance for the above data (rounded to the nearest hundredths). what does the covariance tell us using the context of the problem. (3 points) b. compute the standard deviation for x (rounded to the nearest hundredths). (2 points) c. compute the standard deviation for y (rounded to the nearest hundredths). (2 points) d. compute the sample correlation coefficient (rounded to the nearest hundredths). what does the correlation coefficient tell us that the covariance does not using the context of the problem. (3 points)
Answers: 1
Mathematics, 21.06.2019 19:30
Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics
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Mathematics, 21.06.2019 23:00
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Juanita wade's new car has an msrp of $28,902.11 including title and processing fees. the premier package which includes surround sound and dvd player costs three times the amount of the in-style package which includes leather seats and select wheels. the total cost of her new car was $34,290.08 which included the 6.5% sales tax. find the cost of the premier package to the nearest cent.
Answers: 3
The following observations are given for two variables. x y 2 7 6 10 9 13 11 18 11 21 12 25 7 12 4 7...
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