Mathematics, 26.07.2019 10:30 Briza19
Aschool psychologist reports that the mean number of hours the students at this school sleep each night is 8 hours. the students believe the mean is not 8 hours. to find an estimate of the true mean, they select a random sample of 15 students from their school and ask how many hours each slept last night. a stemplot and boxplot of the numbers of hours are shown here. t he sample mean is 6.67 hours with a sample standard deviation of 1.88 hours. a. verify that the conditions for computing a confidence interval are met in this case. b. compute and interpret a 95% confidence interval for the mean number of hours the students at this school sleep each night.
Answers: 1
Mathematics, 21.06.2019 16:30
The equation of a circle is (x - 3)2 + (y - 7)2 = 25. determine the length of the radius. 4 25 12.5 5 write the standard equation of the circle with center (2, 3) and a diameter of 12. (x - 2)2 + (y - 3)2 = 36 (x + 2)2 + (y + 3)2 = 12 (x - 2)2 + (y - 3)2 = 6 (x - 3)2 + (y - 2)2 = 36 the equation of a circle is (x + 3)2 + (y + 7)2 = 25. where is (3, 4) located in relation to the circle? on the circle in the interior of the circle in the exterior of the circle at the center of the circle
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Which of the following points is collinear with (-2,1) and (0,3)
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Mathematics, 21.06.2019 18:30
Idon’t understand! use slope intercept form to solve: through: (2,5) slope= undefined
Answers: 1
Aschool psychologist reports that the mean number of hours the students at this school sleep each ni...
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