Mathematics, 10.11.2019 03:31 avery8626
Four students did a survey to find the pizza topping sixth-grade students prefer. the table below shows the method each student used to conduct the survey:
student method
troy asked 100 students at random from his seventh-grade class what their favorite pizza topping is
dacia asked 100 eighth-grade students at random what their favorite pizza topping is
julia asked 100 sixth-grade students at random what their favorite pizza topping is
tanner asked 100 third-grade students at random what their favorite pizza toppings?
which student's survey is most likely not biased?
a. troy
b. dacia
c. julia
d. tanner
Answers: 3
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Anew test for ra is being developed. the test is administered to 750 patients with ra and 750 without ra. for the sake of the question, assume the prevalence of ra in this population is 50%. of the 750 patients with ra, 575 have a positive result. of the 750 patients without ra, 150 have a positive result. what is the positive predictive value of the new test? a575/(575+150) b. 600/(600+ 150) c. 575/(575+125) d. 600/(600+ 125)
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Four students did a survey to find the pizza topping sixth-grade students prefer. the table below sh...
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