Compute for EY=μ.
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- Suppose that a population consists of only 5 members and the values of Y are as follows.
|
Member |
1 |
2 |
3 |
4 |
5 |
|
Y |
5 |
3 |
5 |
2 |
2 |
- Compute for EY=μ.
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- Two random samples were drawn from members of the U.S. Congress. One sample was taken from members who are Democrats and the other from members who are Republicans. For each sample, the number of dollars spent on federal projects in each congressperson's home district was recorded. Dollars Spent on Federal Projects in Home Districts Less than S to 10 More than 5 Billion Billion 10 billion Party Row Total Democratic T 10 T 12 23 T Republican 45 12 17 18 47 Column Total 22 29 41 92 (1) Make a cluster bar graph showing the percentages of Congress members from each party who spent each designated amount in their respective home districts. (In the graphs, blue represents Democrats and red represents Republicans.) 50 40 Perntage Perertage 20 10 10 Party Bpending Party Spending Perentage Perentage 10 e ban bilan Pary Bpending Pay pendng (1) Use a 1% level of significance to test whether congressional members of each political party spent designated amounts in the same proportions. (a) What is…A population data set produced the following information. Find the values of O and p². Round to four decimal places and p² to three decimal places. de = p² = i N = 250, Σ x = 9970, Σy = 1473, Σ xy = 85,270 [x²: = 486,260, and Σ ν = 134,385 i4. A Warranty data for an automobile component is shown below: # failures # of Censored # vehicles Mileage within band Δη, beginning of interval h, Pi R. within band i+1 0-2 400 200000 2--4 200 199600 4--6 150 5 199400 6--8 120 15 199245 8--10 110 150 199110 10--12 105 800 198850 12--14 120 2000 197945 14--16 85 3500 195825 16--18 90 6000 192240 18--20 78 8000 186150 20--22 90 10300 178072 22--24 68 12000 167682 24--26 58 13000 155614 26--28 50 13500 142556 28--30 59 13000 129006 30--32 56 12000 115947 32--34 55 11800 103891 34--36 80 11500 92036 >36 80456 80456 Totals 198026 Estimate reliability at the end of 12K, 24K, and 36K miles
- Question 2 Jadual menunjukkan bilangan pelanggan (dalam juta) dan jualan tahunan (dalam RM juta) untuk sampel 14 Outlet Pakaian Berjenama. Table shows the number of customer (in millions) and annual sales (in million RM) for a sample of 14 Branded Apparel Outlet. Store Customers (x) Annual Sales (y) 1 3.7 5.7 2 3.6 5.9 3 2.8 6.7 4 5.6 9.5 3.3 5.4 2.2 3.5 7 3.3 6.2 8 3.1 4.7 9 3.2 6.1 10 3.5 4.9 11 5.2 10.7 12 4.6 7.6 13 5.8 11.8 14 3.0 4.1 a. Draw a scatter diagram to show the relationship between two variables. Answer:NS Vol) LTE l 12:10 . b Nancy Just now For n attributes A,, A2, ... , An (A,A2 . An) 2 (A,) + (A2) + ...+ (An) – (n – 1)N Where N is the total number of observations. II IIThe data shown below are the red cell folate level (ug/l) in three groups.a) Is the data normally distributed? Provide reasons for your answer. (solve using Kruskal Wallis formula)b) Determine if the three groups of red cell folate level are the same? Hence, write a summary of what the result show.
- A study was conducted to determine the effect of a special diet on a person's cholesterol level. The data below are the cholesterol levels of a random sample of seven middle-aged adults who were on a regular diet and who agreed to adopt a special diet for one month. Cholesterol levels were taken before adopting the special diet and a month after. Subject 1 2 3 4 5 7 Before 196 144 203 161 240 245 After 140 153 180 145 211 200 Perform the appropriate test of hypothesis to determine if the special diet is effective in lowering cholesterol level. Assume that the differences between the cholesterol levels before adopting the diet and a month after follow the normal distribution. Use a 5% level of significance. A. Perform a complete test of hypothesis. B. Select here the conclusion for this test of hypothesis. The special diet is effective in lowering cholesterol level. There is no sufficient evidence to say that the special diet is effective in lowering cholesterol level. 6 169 1453.An instructor has given a short quiz consisting of two parts. For a randomly selected student, let X = the number of points earned on the first part and Y= the number of points earned on the second part. Suppose that the joint PMF of X and Y is given in the accompanying table. X 5 Y 0 10 0.06 0.15 0.15 0 0.02 0.12 5 0.04 0.30 10 0.01 0.15 Let Z represents the score recorded in the grade book which is the total number of points earned on the two parts, what is the PMF of Z?45
- 44not a graded question. A question that says: The first and second exam grades X,Yfor a sample of ten students in two Statistics exams were as follows:A population consists of the following N= 6 scores: 0, 4, 6, 1, 3, and 5. Compute u and o for the population. Find the z-score for each score in the population. Transform the original population into a new population of N=6 scores with µ = 50 and o = 10.
