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Romashka-Z-Leto [24]
2 years ago
15

A surveryor wants to know how many shoppers at a mall like to read books. He surveys 100 people coming out of a bookstore at the

mall.
Is this sampling method biased?

A. Yes
B. No
Mathematics
2 answers:
padilas [110]2 years ago
8 0
A. Yes

This sampling method is biased because the survey only asks people that are coming out of a bookstore rather than people all over the mall.
bonufazy [111]2 years ago
3 0
Yes it is biased aaaaaaaaaaaaaaaaaaaaaaaaaa
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The two dice are rolled. what is the theoretical chance that they land to form a sum of 11?
Rufina [12.5K]

Answer:

Propability of getting either sum is 2/9

Step-by-step explanation:

Well, we know that there are 36 total arrangements of the two six sided die. So we have a possibility of 3,4 and 4,3. Likewise, we have a possibility of 5,2 and 2,5. We also have a possibility of 1,6 and 6,1. That takes care of the probability That you get two die that add up to 7. Now for 11, you have 5,6 and 6,5. So since you asked for the probability of getting either or, you add all the probabilities, which is 6/36+2/36=8/36=2/9. So the probability of getting either sum is 2/9.

5 0
3 years ago
In a recent year, 21% of all college students were enrolled part-time. If 7.6 million college students were enrolled part-time t
Blizzard [7]

Answer:

36.19047619 million

or 36,190,476 students

Step-by-step explanation:

7.6 million / all students = 21% / 100%

7.6 * 100 / 21 = 36.19047619

36.19047619 million

or 36,190,476 students

8 0
3 years ago
If <img src="https://tex.z-dn.net/?f=%20a%5E%7B2%7D%2Bbx%5E%7B2%7D%20%3D13%20" id="TexFormula1" title=" a^{2}+bx^{2} =13 " alt="
Mkey [24]

a^2-b^2=13;\ ab=6

a)\\(a+b)^2=a^2+2ab+b^2=(a^2+b^2)+2(ab)=13+2\cdot6=25\\\\b)\\(a-b)^2=a^2-2ab+b^2=(a^2+b^2)-2(ab)=13-2\cdot6=1

7 0
3 years ago
Graph ​ y+6=45(x+3)y+6=45(x+3) ​.
Helen [10]
Try using Mathway./com to get a proper graph fam.

5 0
3 years ago
Solve for x.<br> x2 = 16/49
larisa86 [58]
X^2= 16/49
Take the square root of x, 16, and 49

x^2= x * x
16= 4 * 4
49= 7 * 7

x= 4/7

ANSWER: 4/7

Hope this helps! :)
5 0
3 years ago
Read 2 more answers
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