Mathematics, 15.10.2019 23:30 19zmurphy
4. the u. s. bureau of labor statistics (bls) wishes to estimate the fraction of individuals who belong to a labor union. they are considering two methods of sampling. for each method, explain if you think it will be subject to selection bias (yes or no) and why, and if it will be subject to non-response bias (yes or no) and why. also state whether you think each method will result in too small (downward bias) or too large (upward bias) an estimate of the true average. a)bls will call a random sample of phone numbers from each town and city’s phone book during regular business hours (9 am to 5 pm) and ask whether or not the person who answers belongs to a union. b)bls will survey people at the entrance of each factory in the country on weekday mornings and ask them if they belong to a union. c)now propose a sampling method of your own that you think will generate a more accurate national average. explain why you think it is better.
Answers: 2
Mathematics, 21.06.2019 20:00
An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years
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Mathematics, 21.06.2019 21:00
An account with a $250 balance accrues 2% annually. if no deposits or withdrawals are made, which graph can be used to determine approximately how many years will it take for the balance to be $282? it's e2020 ni️️as
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Mathematics, 21.06.2019 22:00
For [tex]f(x) = 4x + 1[/tex] and (x) = [tex]g(x)= x^{2} -5,[/tex] find [tex](\frac{g}{f}) (x)[/tex]a. [tex]\frac{x^{2} - 5 }{4x +1 },x[/tex] ≠ [tex]-\frac{1}{4}[/tex]b. x[tex]\frac{4 x +1 }{x^{2} - 5}, x[/tex] ≠ ± [tex]\sqrt[]{5}[/tex]c. [tex]\frac{4x +1}{x^{2} -5}[/tex]d.[tex]\frac{x^{2} -5 }{4x + 1}[/tex]
Answers: 2
Mathematics, 21.06.2019 23:20
Point r divides in the ratio 1 : 5. if the coordinates of e and f are (4, 8) and (11, 4), respectively, what are the coordinates of r to two decimal places?
Answers: 2
4. the u. s. bureau of labor statistics (bls) wishes to estimate the fraction of individuals who bel...
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