Mathematics, 20.08.2019 17:30 sickboi
Many humans like the effect of caffeine, but it occurs in plants as a deterrent to herbivory by animals. caffeine is also found in flower nectar, and nectar is meant as a reward, not a deterrent. how does caffeine in nectar affect visitation by pollinators? singaravelan (2005) set up feeding stations where bees were offered a choice between a control solution with 20% sucrose or a caffeinated solution with 20% sucrose plus caffeine. over the course of the experiment, four different concentrations of caffeine were provided: 50, 100, 150, 200 ppm. the response variable was the difference between the amount of nectar consumed from caffeine feeders and that consumed from control feeders at the same station (in grams; relatively more feeding on caffeine yields a positive number, while relatively more feeding on control yields a negative number). here are the data: 50 ppm100 ppm150 ppm200 ppm-0.40.010.650.240.34-0.390.530.4 40.19-0.080.390.130.05-0.09-0.151.0 3-0.14-0.310.460.05a. what is the null hypothesis for the comparison of the difference in consumption between the four treatment groups? what is the alternative hypothesis? b. which of the sum squares do you expect to be greater this time ssgroups or sserror?
Answers: 2
Mathematics, 21.06.2019 14:30, paulinahunl17
The minimum wage in washington has been increasing over the last ten years. years 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 washington state minimum wage $6.50 $6.72 $6.90 $7.01 $7.16 $7.35 $7.63 $7.93 $8.07 $8.55 $8.55 a) find the linear regression equation for the minimum wage in washington using this data ( x 0 in 2000). round to the thousandths. b) what is the slope? specifically, what does the slope represent in the real world context? c) what is the y-intercept? specifically, what does the y-intercept represent in the real world context? d) write your equation as a function of x. e) if you do not earn a college degree and you are earning minimum wage in 2020, what do you predict you will be earning per hour with the linear regression equation? f) if the trend continues, when will the minimum wage be $15 an hour? 3. why are your answers to #1d and #2a above different? which do you think is more accurate (#1 or #2) and why
Answers: 1
Mathematics, 21.06.2019 20:30, yfgkeyonna
On a cm grid, point p has coordinates (3,-1) and point q has coordinates (-5,6) calculate the shortest distance between p and q give your answer to 1 decimal place
Answers: 2
Mathematics, 21.06.2019 21:00, candaceblanton
Helena lost her marbles. but then she found them and put them in 44 bags with mm marbles in each bag. she had 33 marbles left over that didn't fit in the bags.
Answers: 3
Many humans like the effect of caffeine, but it occurs in plants as a deterrent to herbivory by anim...
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