Mathematics, 22.06.2019 15:00 JohnnyR7057
Avideo website would like to test the hypothesis that the standard deviation for the length of an online video watched by a user is more than 2 minutes. a random sample of 21 people who watched online videos was selected. the sample standard deviation for the length of the video was found to be 2.5 minutes. what is the number of degrees of freedom for this hypothesis test?
Answers: 2
Mathematics, 20.06.2019 18:04, EwTrTw4584
Tom and maria typed in words in the ratio of 1 : 5 in 20 minutes. they typed 864 words altogether. find the number of words that each of them typed
Answers: 3
Mathematics, 21.06.2019 16:10, bananaslada
Determine whether the following statements are true and give an explanation or counterexample. bold a. when using the shell method, the axis of the cylindrical shells is parallel to the axis of revolution. bold b. if a region is revolved about the y-axis, then the shell method must be used. bold c. if a region is revolved about the x-axis, then in principle it is possible to use the disk/washer method and integrate with respect to x or the shell method and integrate with respect to y.
Answers: 3
Mathematics, 22.06.2019 01:30, shrinu
Marion has a bicycle that she is planning to take for a ride. the rim of the rear wheel lies 41 cm from the center of the wheel. the tire itself has a thickness of 3 cm. in order for marion to ride her bicycle 96,712 cm approximately how many rotations will the rear wheel make?
Answers: 1
Avideo website would like to test the hypothesis that the standard deviation for the length of an on...
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