Mathematics, 20.07.2019 03:30 zulfiquer5541
The mean length of a candy bar is 43 millimeters. there is concern that the settings of the machine cutting the bars have changed. test the claim at the 0.02 level that there has been no change in the mean length. the alternate hypothesis is that there has been a change. twelve bars (n = 12) were selected at random and their lengths recorded. the lengths are (in millimeters) 42, 39, 42, 45, 43, 40, 39, 41, 40, 42, 43, and 42. the mean of the sample is 41.5 and the standard deviation is 1.784. computed t = -2.913. has there been a statistically significant change in the mean length of the bars?
Answers: 2
Mathematics, 21.06.2019 19:30, ginocousins06
Fa bus driver leaves her first stop by 7: 00 a. m., her route will take less than 37 minutes. if she leaves after 7: 00 a. m., she estimates that the same route will take no less than 42 minutes. which inequality represents the time it takes to drive the route, r?
Answers: 3
Mathematics, 21.06.2019 20:00, Enaszr9657
Two line segments are shown in the figure below. suppose that the length of the line along the x-axis is 6, and the length of the hypotenuse of the triangle is 10. what is the equation of the hypotenuse line (shown in red, below)?
Answers: 3
Mathematics, 21.06.2019 22:30, SKYBLUE1015
Select all of the following expressions that are equal to 2.5.
Answers: 3
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