A scientist is hoping to compare the mean levels of DDT toxin found in three species of fish in a local river. He randomly samples 50 of each species to use in the analysis. For each fish, he measures the amount of DDT toxin present. Ideally he will be able to rank the species based on the mean level of toxin found in each of the three species. Identify the response variable in this study. The number of fish The three fish species The amount of DDT in a fish The scientist

The amount of DDT in a fish

Step-by-step explanation:

The response variable is the focus of a question in a study or experiment. Is the variable you are measuring and trying to explain.

In this case, is what the scientist is measuring and using to compare the fish species: the amount of DDT in a fish.

The explanatory variable is what drives changes in the response variable (usually the indendent variable). In this study, the explanatory variable would be the species of fish.

chicken chicken chicken

step-by-step explanation:

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column