To State:
The type of sample used in the given situation and also mention if the sample is biased or unbiased.
Self-selected sample.
Biased.
Given:
A student sends a survey about the internet usage of high school students via email to each person in his address book and uses only the surveys that are returned.
Concepts Used:
In a self-selected sample only those people who volunteer to respond are part of the sample.
A sample is called biased if it doesn’t represent the population well.
Description:
This is a self-selected sample as only those people who volunteered to respond are part of the sample. Since no random selection of sample is done, it might be true that the people with a particular kind of response to survey questions have greater chance of responding to the survey, this sample is biased.
Conclusion:
This is a self-selected sample. This sample is biased.
Chapter 6 Solutions
EBK ALGEBRA 2
- 2 סוי vle.mathswatch.co.uk Queue | Oxf... X VIEWER XD... Submit a co... 18/28 Marks mplify 2a (a + 1) + 5(3a - 2) 2a+ 3 Answer + 5 البقاله بالهجه ..... W e r t y u # S £ יו 20 d f g harrow_forwardDraw a line representing the "rise" and a line representing the "run" of the line. State the slope of the line in simplest form. Click twice to plot each segment.Click a segment to delete it. 12345678910-1-2-3-4-5-6-7-8-9-1012345678910-1-2-3-4-5-6-7-8-9-10xy12345678910-1-2-3-4-5-6-7-8-9-1012345678910-1-2-3-4-5-6-7-8-9-10xy Answer Attempt 1 out of 2 Slope of the Line:arrow_forwardD2L Course Schedule × zm MATH 140 AC O Math 140 AC2 MT X Home - Google Dix Untitled documen X APznzaZOmoEKtr X adidas Samba OG × ✓ Math 140 AC2 MT × | + C doc-08-9s-prod-00-apps-viewer.googleusercontent.com/viewer2/prod-00/pdf/4b40ij3n5ssib10rfbdvgd4hcOnkjh9f/0972m4636 vecpvn6ctclvph34kfeur7... Q Update: APznzaZOmoEKtnM4eg2YA5rwDV97bDw0GG39cSO6IEGFlaYSOS4iHO... 2 / 3 - 90% + | 2. We spent a lot of time working with linear functions and distinguishing them from nonlinear functions. For a-c, if the function is linear, find its equation. If it is not linear, explain why it's not linear. (7.5 pts.) a) The UPass is a great program for students in college. You pay $80 for unlimited ‘L' and bus rides for the entire semester. U(x) is the cost for x 'L' and bus rides in one semester. b) X g(x) -1 -1 -2 -3 2 5 0 1 1 3 c) 4. 3. 2 1- 6 -5 -4 -3 -2 -1 0 1 2 4 5 6 7 8 -1- -2arrow_forward
- D2L Course Sched X | zm MATH 140 ✗ Math 140 AC2 × Untitled docun X APznzaZOmoE X adidas Samba × |_ Math 140 AC2 × Home - Google × b Home | bartleb × | + С doc-08-9s-prod-00-apps-viewer.googleusercontent.com/viewer2/prod-00/pdf/4b40ij3n5ssib10rfbdvgd4hc0nkjh9f/0972m4636 vecpvn6ctclvph34kfeur7... Q Update: III APznzaZOmoEKtnM4eg2YA5rwDV97bDw0GG39cSO6IEGFlaYSoS4iHO... MT Check In Pat 1 2 20 for x=0 G(x)=15+ 300arrow_forwardThank you.arrow_forwardThank you.arrow_forwardLet V, W, and Y be vector spaces. Suppose dim(V) dim(W) = dim(Y) = 2. = Let ("beta") be an ordered basis for V. Let ("gamma") be an ordered basis for W. Let ("zeta") be an ordered basis for Y. Suppose S is a linear transformation from V to W and that T is a linear trans- formation from W to Y. Remember that ToS is the function from V to Y defined by (TOS)(v) = T(S(v)). (a) Prove that To S is a linear transformation. (b) Prove that ° [T • S] = [T]{[S]}.arrow_forwardLet W={(0, a, 0) | a Є R}. (a) List four elements from W. (b) Determine whether W is a subspace of R³, and prove that your answer is correct.arrow_forwardFor this problem, refer to the network as shown in Figure 1, answer the following questions. B A C FIGURE 1. For Problem (7). Let x₁ be the number of users at website A. Let x2 be the number of users at website B. Let x3 be the number of users at website C. Assume that there are a total of 900 users at these three websites. This gives us the following system of linear equations: x1 = x2 + 1x3 x2 = x1 + x3 x3 = x2 = 900 x1 + x2 + x3 = (a) Put this system into a standard form (with all variables on the left side and with the constants on the right), and convert that system into an augmented matrix, and then... (b) Use elementary row operations to put the augmented matrix into reduced row echelon form, and then... (c) Write down the solution space for this system of equations, and then... (d) Identify which website(s) would be ranked most highly by PageRank.arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
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