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hram777 [196]
2 years ago
10

Luc randomly selected 40 students and asked them whether they had ever gone snowboarding. He repeated this survey using the same

method three more times.
Do any of the surveys appear to be biased?

Ever gone snowboarding? Survey
1 2 3 4
Yes 10 13 2 12
No 30 27 38 28


A.
Yes, because the results from Survey 3 differ significantly from results from Surveys 1, 2, and 4, which agree.

B.
Yes, because all four surveys do not have identical results.

C.
No, because although the results differ among the four surveys, the sample method used for all was the same.

D.
No, because all four surveys have about the same number of people saying “yes” and about the same number of people saying “no.”
Mathematics
1 answer:
anygoal [31]2 years ago
7 0
<span>C. No, because although the results differ among the four surveys, the sample method used for all was the same. Luc RANDOMLY selects 40 students in every survey. Random selection in surveys do not create bias and the results are highly credible. This is because there are no preconceived notions or factors that affect the responses of people being surveyed.</span>
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Please help, seriously confused
Rufina [12.5K]
Original height = original width = x mm

1. She made an enlarged copy...
height = 2x
width = 2x

2. She cut off a rectangle...
height = 2x
width = \frac{2}{3} *2x= \frac{4}{3}x

3.She doubled the width...
height = 2x
width = 2*\frac{4}{3}x = \frac{8}{3}x

height * width = area

2x * \frac{8}{3}x=139 \ 968  \\ \\ \frac{16}{3}x^2= 139 \ 968 \\\\ x^2=139 \ 968: \frac{16}{3}=139 \ 968 * \frac{3}{16}=  8 \ 748*3 = 26 \ 244 \\  \\ x= \sqrt{26 \ 244} = 162 \ mm

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6 0
3 years ago
Answer If u dont know dont answerrrr.
Katen [24]

Answer:

what? i belive the answer is B

Step-by-step explanation:

4 0
2 years ago
10. Melissa has $20 to buy bagels and juice for her class. box of bagels bottle of juice 56.13, including tax $2.08, including t
adelina 88 [10]

The inequality for the maximum number of bottles of juice she can buy

6.13+ 2.08b <20.00

Option B

Given

Melissa has $20 to buy bagels and juice for her class

Box of bagels :   6.13 including tax

Bottle of juice: 2.08 including tax

She will buy only one box of bagels that is for 6.13

Let 'b' be the number of bottles of juice she can buy

Total cost should be less than 20 dollars

6.13(one bagels) +2.08(bottles of juices)<20

So the inequality becomes

6.13+2.08b

Learn more :  brainly.com/question/1836165

4 0
2 years ago
A car rental charge is $100 plus $5.00 per mile traveled. Create an equation for the situation above.
Elis [28]
Answer:
X = 100$ + 5a$
Where X is the price of a car rent
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3 0
3 years ago
Which is greater 20.903 or 2.209
goldenfox [79]

Answer:

20.903

Step-by-step explanation:

8 0
2 years ago
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