q7 #12
q7 #12 A random sample of 19 wolf litters in Ontario, Canada, gave an average of...
A random sample of 24 wolf litters in Ontario, Canada, gave an average of x1 = 4.4 wolf pups per litter, with estimated sample standard deviation s1 = 1.0. Another random sample of 11 wolf litters in Finland gave an average of x2 = 2.8 wolf pups per litter, with sample standard deviation s2 = 1.3. (a) Categorize the problem below according to parameter being estimated, proportion p, mean μ, difference of means μ1 – μ2, or difference of proportions...
A random sample of 25 wolf litters in Ontario, Canada, gave an average of X1 = 5.6 wolf pups per litter, with estimated sample standard deviation S1 = 0.9. Another random sample of 14 wolf litters in Finland gave an average of x2 = 2.2 wolf pups per litter, with sample standard deviation s2 = 0.8. (a) Categorize the problem below according to parameter being estimated, proportion p, mean u, difference of means uu - U2, or difference of proportions...
Most married couples have two or three personality preferences in common. A random sample of 379 married couples found that 134 had three preferences in common. Another random sample of 573 couples showed that 215 had two personality preferences in common. Let Pi be the population proportion of all married couples who have three personality preferences in common. Let p2 be the population proportion of all married couples who have two personality preferences in common. (a) Find a 90% confidence...
Independent random samples from two regions in the same area gave the following chemical measurements (ppm). Assume the population distributions of the chemical are mound-shaped and symmetric for these two regions. Region I: 386 500 648 767 700 474 1079 684 843 529 745 714 Region II: ; 707 701 604 824 754 937 730 826 894 1007 714 1021 967 742 608 484 Let be the population mean and be the population standard deviation for . Let be the population...
Most married couples have two or three personality preferences in common. A random sample of 388 married couples found that 120 had three preferences in common. Another random sample of 572 couples showed that 240 had two personality preferences in common. Let p1 be the population proportion of all married couples who have three personality preferences in common. Let p2 be the population proportion of all married couples who have two personality preferences in common. (a) Find a 95% confidence...
At Community Hospital, the burn center is experimenting with a new plasma compress treatment. A random sample of n1-332 patients with minor burns received the plasma compress treatment. Of these patients, it was found that 250 had no visible scars after treatment. Another random sample of n2 428 patients with minor burns received no plasma compress treatment. For this group, it was found that 87 had no visible scars after treatment. Let p1 be the population proportion of all patients...
A study considered the question, 'Are you a registered voter?" Accuracy of response was confirmed by a check of city voting records. Two methods of survey were used: a face-to-face interview and a telephone interview. A random sample of 85 people were asked the voter registration question face to face. Of those sampled, seventy-six respondents gave accurate answers (as verified by city records). Another random sample of 90 people were asked the same question during a telephone interview. Of those...
Question 7 Independent random samples from two regions in the same area gave the following chemical measurements (ppm). Assume the popalation distributions of the chemical are mound-shaped and symmetric for these two regions Region 1,71; m1 = 12 981 726 686 496 657 627 815 504 950 605 570 520 Region I: x2 2-16 024 830 526 502 539 373 888 685 868 1093 1132 792 1081 722 1092 844 LotMg-678 be the population mean and ơ1.164 be the population...
Independent random samples of professional foctball and basketball players gave the following information. Heights (In ft) of pro football players: x1i n1 45 6.35 6.52 6.50 6.25 6.50 6.33 6.25 6.17 6.42 6.33 6.42 6.58 6.08 6.58 6.50 6.42 6.25 6.07 5.01 G.OD 6.50 5.83 5.91 5.67 6.0D .0B 6.17 6.58 6.50 6.25 Hcights (in ft) of pro basketball players: x2i n2 40 6.05 6.5S5 6.25 6.5 6.25 5.92 7.00 641 6.75 6.25 .00 6.92 6.83 6.5 .41 6.07 6.07...
Question 7 Not yet anowered Points out of 7.00 g qestion Independent random samples from two regions in the same area gave the following chemical measurements (ppm). Assume the population distributions of the chemical are mound-shaped and symmetric two regions for these Region I: 1-12 981 726 686 496 657 627 815 504 950 605 570 520 Region 11: 2-16 1024 830 526 502 539 373 888 685 868 1093 1132 792 1081 722 1092 844 Let μ1-678 be the...