Mathematics, 12.12.2019 05:31 Olaf2018
Records of 40 used passanger cars and 40 used pickup tricks were randomly selected to investigate whether there was any difference in the mean time in years that they were kept by original owner before being sold. for cars, the mean was 5.3 years with standard deviation 2.2 years. for pickup trucks, the mean was 7.1 years with standard deviation 3.0 years. test the hypothesis that there is a difference in the means against the null hypothesis that there is no difference. use the 1% level of significance.
Answers: 1
Mathematics, 21.06.2019 15:00
This week, conrad will work 1 3/4 times longer than last week. giovanni will work 1 1/3 times longer than last week. sally will work 2/3 the number of hours she worked last week. match each employee's name to the number of hours he or she will work this week
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Mathematics, 21.06.2019 15:40
Two parallel lines are crossed by a transversal. what is the value of x? x = 40 x = 70 x = 110 x = 130
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Mathematics, 21.06.2019 19:00
Eis the midpoint of line segment ac and bd also line segment ed is congruent to ec prove that line segment ae is congruent to line segment be
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Records of 40 used passanger cars and 40 used pickup tricks were randomly selected to investigate wh...
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