Question

Please I need help ASAP! Got all my math done during spring break but need help with these two questions!! Thanks a bunch and will medal!! Questions to follow

Answer 1

Sorry put in wrong Question this is correct ones


A researcher tagged 40 giant turtles in 2008. In 2009, she returned and captured 50 turtles, 16 of which were tagged. In 2010, she returned again and captured 30 turtles, 8 of which were tagged.

a. Use a proportion to estimate the turtle population for 2009.

b. Use a proportion to estimate the turtle population for 2010.

Answer 2

a) Describe the overlap of the two sets of data.

b) Calculate the mean of each data set.

c) Calculate the mean absolute deviation (MAD) of each data set.

d) Which set is more variable? How do you know?

Answer 3

I think on second question b.) is 71.8, 72 as mean for both data sets

Answer 4

@stuckinarut you r correct. You are Genius... you have Selected the correct option.

Answer 5

You need to figure out what proportion you are taking and how that proportion will help you estimate the turtle population. Would you guess there are more turtles if a) all the turtles caught in 2009 were tagged or b) none of them were? Why?

Answer 6

Not stupid at doing the math just dont understand how to correctly get the problem started on either of these but hey thanks @goformit100

Answer 7

@Dharmaputra_993 Sir plz Hel Him.

Answer 8

My Pleasure @stuckinarut

Answer 9

@goformit100 Hel him?

Answer 10

I thought 34:50 for 2009

Answer 11

That could work. What is that a proportion of?

Answer 12

untagged turtles

Answer 13

Well, let's say x is the actual turtle population. 16 out of 50 turtles were tagged, and there were 40 tagged turtles originally. Then we could assume that the following equation holds: \[\frac{16}{50} = \frac{40}{x}\]

Answer 14

because the proportion of the tagged turtles should be about the same, whether we're looking at only 50 turtles or at the whole population

Answer 15

Compared to what? Proportions always have two parts, right. Then you have to compare that to another proportion comparing the same information.

Answer 16

Ah gotcha!!

Answer 17

You can use either 16 or 34, but you have to be careful what each of these numbers represents.

Answer 18

Thats what kinda got me too

Answer 19

well, if you used 34, you would have to write it like this:\[\frac{34}{50} = \frac{x-40}{x}\]

Answer 20

but of course it's easier to solve the equation if you do it the "16-way"

Answer 21

lol yea 125

Answer 22

I think that's correct, got the same result.

Answer 23

yea!!

Answer 24

What about problem two? How do I find part b?

Answer 25

Oh yea and on part b of problem 2 I believe that is 150 turtles

Answer 26

Seems right. I'm not quite sure how to interpretate this data. On the "Soil A"-side, it says Key: 9|6 means 69, whereas on the "Soil-B"-side it says Key: 5|8 means 58. Doesn't really make a lot of sense. Do you think the first one is a typing error?

Answer 27

no on the graph you will read the left side backwards so the middle number is first on them as well does that make sense

Answer 28

ahh, ok. Now I get it

Answer 29

Well, for the mean value of the left-hand side for example, you just add up all the data you've got, and then divide by the number of terms you added up

Answer 30

got that part I believe its the part b that I dont know how to do

Answer 31

or should say the steps to do it

Answer 32

Do you think you would get it if I would describe it using mathematical formulas rather than words? I can't help it, I'm a mathematician

Answer 33

yes that would be fine!

Answer 34

let's say your data consists of n different numbers, I'll refer to them as\[x_1, x_2,...,x_i,...,x_n\]

Answer 35

and let X be the mean value

Answer 36

then the mean absolute deviation is calculated using the following formula: \[\frac{1}{n}\sum_{i=1}^{n} |X-x_i|\]

Answer 37

ok

Answer 38

Got it thank you so much for your help means ALOT!! Very helpful I really do appreciate your time

Answer 39

you're welcome