Mathematics, 22.05.2021 06:40 sgslayerkingminecraf
A music test was conducted among randomly selected 100 students in a school. 100
students were split into two groups of 50 students each. One group was asked to play
their best music while they smelt smoke from garbage. Another group was asked to
play their best music while they smelt flowers from a garden. The students were
tested individually from each group; result was recorded and compared.
What will happen if a few masters are placed in the treatment group?
A: The sample will not be a random sample and investigation may become invalid.
B: The sample will be a random sample and the investigation may be strong.
C: The sample will not be a random sample and it may lead to observation method.
D: The sample will not be random, but it may lead to survey method.
Answers: 3
Mathematics, 21.06.2019 19:00
Amodel rocket is launched from a roof into a large field. the path of the rocket can be modeled by the equation y = -0.04x^2 + 8.6x + 4.8, where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. how far horizontally from its starting point will the rocket land? a. 0.56 m b. 215.56 m c. 431.11 m d. 215.74 m
Answers: 1
Mathematics, 21.06.2019 20:00
Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0
Answers: 2
Mathematics, 21.06.2019 22:00
Given sinβ
= 1/3 and 0 < β
< Ο/2 ; find tan2β
a. (4β2)/9 b. 9/7 c. (4β2)/7 d.7/9
Answers: 2
A music test was conducted among randomly selected 100 students in a school. 100
students were spli...
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