Mathematics, 12.04.2020 18:52, vanitycarraway2000
How many commuters must be randomly selected to estimate the mean driving time of Chicago commuters? We want 90% confidence that the sample mean is within 4 minutes of the population mean, and the population standard deviation is known to be 12 minutes.
Answers: 1
Mathematics, 21.06.2019 16:30, nockturnal1993
Acarnival sold tickets for $1.50 for adults and $1.00 for students. there were 54 tickets sold for a total of $70.50. write a system of equations to represent the number of adult tickets, x, and the number of student tickets, y. find the solution and explain what it means. i'll you if you me
Answers: 1
Mathematics, 21.06.2019 17:20, organicmemez
Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?
Answers: 2
Mathematics, 21.06.2019 21:10, Marshmallow6989
Patty made a name tag in the shape of a parallelogram. reilly made a rectangular name tag with the same base and height. explain how the areas of the name tags compare.
Answers: 2
Mathematics, 21.06.2019 21:10, zahradawkins2007
Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x
Answers: 2
How many commuters must be randomly selected to estimate the mean driving time of Chicago commuters?...
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