Aseven-year medical research study reported that women whose mothers took the drugdes during pregnancy were twice as likely to develop tissue abnormalities that might leadto cancer as were women whose mothers did not take the drug. a. this study involved the comparison of two populations. what were the populations? b. do you suppose the data were obtained in a survey or an experiment? c. for the population of women whose mothers took the drug des during pregnancy, asample of 3980 women showed 63 developed tissue abnormalities that might leadto cancer. provide a descriptive statistic that could be used to estimate the number ofwomen out of 1000 in this population who have tissue abnormalities. d. for the population of women whose mothers did not take the drug des during pregnancy, what is the estimate of the number of women out of 1000 who would beexpected to have tissue abnormalities? e. medical studies often use a relatively large sample (in this case, 3980). why?

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations:

the answer is:

mean: 6

mad: 2.14

after going and makeing graphs i would go with a,

there is nothing that is matches the graph. if there was i would show you. but therefore my answer is a.

hope i

-lavira: )

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this