An investigator conducts an experiment with four treatment groups. The response variable is growth of a plant during the experiment. She performs an F-test. What is the null hypothesis the researcher is testing with the F-test?

a. All plants in all treatment groups have the same growth during the experiment.
b. All four treatment groups have the same average growth of the plants during the experiment.
c. All four treatment groups have a different average growth of plants during the experiment.
d. At least one treatment group has a different average growth of plants during the experiment, but not all four necessarily have different mean growths.
e. All plants in each treatment group have the same growth during the experiment, but plants in different treatment groups might have different growths.

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

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.

Rewrite the following quadratic functions in intercept or factored form. show your work. y = x^2 + 7x + 10