Question

An organic farmer wanted to find out how many eggs a typical hen lays during 1 month. She chose 8 hens at random from the 60 hens she has, then recorded the number of eggs each of the 8 hens laid.

Number of eggs: 9, 9, 7, 11, 10, 11, 11, 8

What is an estimate of the mean number of eggs laid in the population of 60 hens?

Answer 1

@NMVA

Answer 2

i think its 9.5

Answer 3

i just dont get why it calls the mean the estimated mean instead of just the mean

Answer 4

do you know what estimated mean means

Answer 5

no

Answer 6

@techygirl

Answer 7

@Libbi_Marie

Answer 8

medals

Answer 9

for who answers it and explains it

Answer 10

add all the numbers and divide by the number of numbers for the mean

Answer 11

ok but why do they call it the estimated mean?

Answer 12

round the number

Answer 13

i got 9.5 do i round that

Answer 14

yes

Answer 15

and i round that 2 10 right?

Answer 16

the answer would be 10 because you have to add all of the numbers then divide by 8 which is 9.5 which you round up

Answer 17

yes thats correct

Answer 18

thank u both can i ask another

Answer 19

sure

Answer 20

A climatologist wants to determine the thickness of a glacier with a surface area of about 2 km2. He selected 12 locations at random on the glacier and then measured the thickness of the glacier, in meters, at each location.

29, 41, 38, 36, 29, 34, 44, 46, 43, 35, 40, 47

What is the estimated median thickness of the entire glacier?

Answer 21

look for the middle number

Answer 22

I think it is either 36 or 38

Answer 23

focus on the word think

Answer 24

i think its 40 or 48

Answer 25

? think ?

Answer 26

48 is the biggest number

Answer 27

40 is the answer

Answer 28

ok can i asked 2 more?

Answer 29

i give more medals

Answer 30

go ahead

Answer 31

A juice bar conducted a survey to determine which juice drink its customers prefer. The juice bar selected every 10th customer in 1 week, with 75 customers surveyed in all. The juice bar made a table of the results.

What inferences can be drawn from this survey?

Juice Drink Lemon Lift Power Pear Tangy Apple Wild Berry Total
Number of responses 25 17 12 21 75


Choose all answers that are correct.

A.
About 17% of the customers like Power Pear the most.

B.
About 21% of the customers like Wild Berry the most.

C.
Lemon Lift is the juice drink preferred by most customers.

D.
Tangy Apple is the juice drink preferred by the fewest customers.

Answer 32

A and B

Answer 33

1 more question

Answer 34

k

Answer 35

A cell phone manufacturer chose 200 people at random and asked them whether they would purchase the newest model for $300. The manufacturer repeated this survey using the same method three more times.

Do any of the surveys appear to be biased?

Would purchase new model for $300? Survey
1 2 3 4
Yes 127 131 128 133
No 73 69 72 66


A.
Yes, because the results from Survey 1 differ the most from the other surveys’ results.

B.
Yes, because the results from Survey 4 differ the most from the other surveys’ results.

C.
No, because the sampling methods are all different but have about the same results.

D.
No, because all four surveys have about the same number of people saying “yes” and about the same number of people saying “no.”

Answer 36

also are u sure about the question u just answreed

Answer 37

c and pretty sure

Answer 38

but just to remind you, no one is perfect

Answer 39

ok and thank u i give u medal now

Answer 40

aww thx

Answer 41

np

Answer 42

lol i got a 20 but its ok

Answer 43

im pretty good with probability and mmma and stuff like that