Mathematics, 17.12.2019 01:31 josephvaldez518
Alab at the debakey institute orders 150 rats a week for each of the 52 weeks in the year for experiments that the lab conducts.
suppose the mean cost of rats used in lab experiments turned out to be $20.00 per week. interpret this value.
a. the expected or average costs for all weekly rat purchases is $20.00
b. most of the weeks resulted in rat costs of $20.00
c. the median cost for the distribution of rat costs is $20.00
d. the rat cost that occurs more often than any other is $20.00
Answers: 2
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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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Alab at the debakey institute orders 150 rats a week for each of the 52 weeks in the year for experi...
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