Mathematics, 08.01.2021 17:40, payshencec21
A large school district held a district-wide track meet for all high school students.
For the 2-mile run, the population of female students participating had a mean running time of 8.8 minutes with standard deviation of 3.3 minutes, and the population of male students participating had a mean running time 7.3 minutes with standard deviation of 2.9 minutes.
Suppose 8 female students and 8 male students who participated in the 2-mile run are selected at random from each population.
Let x-barM represent the sample mean running time for the male students, and let x- barF represent the sample mean running time for the female students. What are the mean and standard deviation of the sampling distribution of the difference in sample means x-barM-x-barF?
a. 0.4 & 4.042.
b. 1.5 & 1.553.
c. 0 -1.5 & 2.413.
d. 1.5 & 2.413.
e. -1.5 & 1.553.
Answers: 3
Mathematics, 21.06.2019 13:30, tylorwsimmons
Which transformations could have occurred to map △abc to △a"b"c"? a rotation and a reflection a translation and a dilation a reflection and a dilation a dilation and a rotation
Answers: 1
Mathematics, 21.06.2019 16:50, joshsd8479
Which is a true statement comparing the graphs of x^2/6^2-y^2/8^2 = 1 and x^2/8^2-y^2/6^2 the foci of both graphs are the same points. the lengths of both transverse axes are the same. the directrices of = 1 are horizontal while the directrices of = 1 are vertical. the vertices of = 1 are on the y-axis while the vertices of = 1 are on the x-axis.
Answers: 2
A large school district held a district-wide track meet for all high school students.
For the 2-mil...
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