Mathematics, 03.02.2021 22:40, lilly9240
Karen buying pens and markers for school. Packs of pens cost $2.75
each and packs of markers cost $3.25 each. If she bought a total 6 packs
and spent $17.50, how many of each did she buy?
Answers: 1
Mathematics, 21.06.2019 20:30, marahkotelman
Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?
Answers: 1
Mathematics, 21.06.2019 21:40, dededese2403
Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels. ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0
Answers: 1
Mathematics, 21.06.2019 23:00, tonimgreen17p6vqjq
Which graph represents the linear function below? y-3=1/2(x+2)
Answers: 2
Mathematics, 22.06.2019 00:30, tremainecrump1466
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)
Answers: 2
Karen buying pens and markers for school. Packs of pens cost $2.75
each and packs of markers cost $...
History, 21.01.2020 18:31