An experiment compares two treatment conditions with a sample ofn = 20 in each treatment. If the data are analyzed with ANOVA, the analysis would have dftotal %3D O A. 18 В. 19 Ос. 38 D. 39
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- List the sample space of each experiment. Tossing three coinsDA simple sample of heights of 6400 English men has a mean of 170cm and a S.D. of 6.4 cm, while a sample of 1600 Americans has a mean of 172 cm and a S.D. of 6.3 cm. Do the data indicate that Amnericans are, on average, taller than the Englishmen? ii) Tests made on the breaking strength of 10 pieces of a metal wire gave the results: 578, 572, 570,568,572,570,570,572,596 and 584 kg, test if the mean breaking strength of the wire can be assumed as 577 kg.Is the proportion of wildfires caused by humans in the south different from the proportion of wildfires caused by humans in the west? 350 of the 519 randomly selected wildfires looked at in the south were caused by humans while 383 of the 500 randomly selected wildfires looked at the west were caused by humans. What can be concluded at the a = 0.01 level of significance? Rectangular Snip a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: Select an answer | (please enter a decimal) Select an answer v Select an answer H1: Select an answer v Select an answer vSelect an answer v (Please enter a decimal) c. The test statistic ? v = (please show your answer to 3 decimal places.)
- A one-way analysis of variances produces dftotal = 39 and dfwithin = 36. For this analysis, what is dfbetween? A)1 B) 2 C) 3 D) 0Do larger universities tend to have more property crime? University crime statistics are affected by a variety of factors. The surrounding community, accessibility given to outside visitors, and many other factors influence crime rate. Let x be a variable that represents student enrollment (in thousands) on a university campus, and let ybe a variable that represents the number of burglaries in a year on the university campus. A random sample of n = 8 universities in California gave the following information about enrollments and annual burglary incidents. x 10.5 30.6 24.5 14.3 7.5 27.7 16.2 20.1 y 23 75 39 23 15 30 15 25 (a)Make a scatter diagram of the data. Then visualize the line you think best fits the data. (Submit a file with a maximum size of 1 MB.) (b)Use a calculator to verify that Σ(x) = 151.4, Σ(x2) = 3341.34, Σ(y) = 245,Σ(y2) = 10179 and Σ(x y) = 5509.9. Compute r. (Enter a number. Round to 3 decimal places.)As x increases, does the value of r imply that y should…Do larger universities tend to have more property crime? University crime statistics are affected by a variety of factors. The surrounding community, accessibility given to outside visitors, and many other factors influence crime rate. Let x be a variable that represents student enrollment (in thousands) on a university campus, and let ybe a variable that represents the number of burglaries in a year on the university campus. A random sample of n = 8 universities in California gave the following information about enrollments and annual burglary incidents. Use a calculator to verify that Σ(x) = 57, Σ(x2) = 869, Σ(y) = 632,Σ(y2) = 89,050, and Σ(x y) = 8,532.Compute r. (Enter a number. Round your answer to three decimal places.) x 10.5 30.6 24.5 14.3 7.5 27.7 16.2 20.1 y 23 75 39 23 15 30 15 25
- A sample of n= 4 scores has SS = 60. What is the variance for this sample? a) 15 b) 20 c) 60 d) 30In a 25-Question multiple-choice, there are five possible answers of which one is correct. Let X: number of correct answers. Find Variance of X= Select one: O a. 4 O b. 6 О с.5 O d. 8 О е.2 Next page 2:09 PMDo larger universities tend to have more property crime? University crime statistics are affected by a variety of factors. The surrounding community, accessibility given to outside visitors, and many other factors influence crime rate. Let x be a variable that represents student enrollment (in thousands) on a university campus, and let y be a variable that represents the number of burglaries in a year on the university campus. A random sample of n = 8 universities in California gave the following information about enrollments and annual burglary incidents.
- Do larger universities tend to have more property crime? University crime statistics are affected by a variety of factors. The surrounding community, accessibility given to outside visitors, and many other factors influence crime rate. Let x be a variable that represents student enrollment (in thousands) on a university campus, and let y be a variable that represents the number of burglaries in a year on the university campus. A random sample of n = 8 universities in California gave the following information about enrollments and annual burglary incidents. x 14.3 31.8 24.5 14.3 7.5 27.7 16.2 20.1 y 24 70 39 23 15 30 15 25 (a) Make a scatter diagram of the data. Flash Player version 10 or higher is required for this question. You can get Flash Player free from Adobe's website. Then visualize the line you think best fits the data. (b) Use a calculator to verify that Σx = 156.4, Σx2 = 3510.46, Σy = 241, Σy2 = 9501 and Σxy = 5542.6.Compute r. (Round to 3 decimal…Do larger universities tend to have more property crime? University crime statistics are affected by a variety of factors. The surrounding community, accessibility given to outside visitors, and many other factors influence crime rate. Let x be a variable that represents student enrollment (in thousands) on a university campus, and let y be a variable that represents the number of burglaries in a year on the university campus. A random sample of n = 8 universities in California gave the following information about enrollments and annual burglary incidents. x 12.9 29.8 24.5 14.3 7.5 27.7 16.2 20.1 y 24 69 39 23 15 30 15 25 A)Compute r. (Round to 3 decimal places.)B)As x increases, does the value of r imply that y should tend to increase or decrease? Explain your answer.Do larger universities tend to have more property crime? University crime statistics are affected by a variety of factors. The surrounding community, accessibility given to outside visitors, and many other factors influence crime rate. Let x be a variable that represents student enrollment (in thousands) on a university campus, and let y be a variable that represents the number of burglaries in a year on the university campus. A random sample of n = 8 universities in California gave the following information about enrollments and annual burglary incidents.x 12.3 28.6 24.5 14.3 7.5 27.7 16.2 20.1y 23 72 39 23 15 30 15 25 a) Compute r. (Round your answer to four decimal places.)
