Mathematics, 11.07.2019 23:30 alexisbrad3107
Most individuals are aware of the fact that the average annual repair cost for an automobile depends on the age of the automobile. a researcher is interested in finding out whether the variance of the annual repair costs also increases with the age of the automobile. a sample of 26 automobiles 4 years old showed a sample standard deviation for annual repair costs of $120 and a sample of 23 automobiles 2 years old showed a sample standard deviation for annual repair costs of $100. let 4 year old automobiles be represented by population 1.state the null and alternative versions of the research hypothesis that the variance in annual repair costs is larger for the older automobiles.
Answers: 3
Mathematics, 22.06.2019 01:00, preshoo1454
Select the correct answer from each drop-down menu the equation of a line is 3/5*+1/3y=1/15
Answers: 2
Mathematics, 22.06.2019 01:40, cfigueroablan
Which statement is true about the extreme value of the given quadratic equation? a. the equation has a maximum value with a y-coordinate of -21. b. the equation has a maximum value with a y-coordinate of -27. c. the equation has a minimum value with a y-coordinate of -21. d. the equation has a minimum value with a y-coordinate of -27.
Answers: 1
Mathematics, 22.06.2019 05:00, alisonlebron15
The equation for two lines in the coordinate plane are 2dx+y=4 and -6x+y=3, where d represents an unknown value. what value(s) of d would make these lines parallel?
Answers: 1
Most individuals are aware of the fact that the average annual repair cost for an automobile depends...
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