A corporation wishes to obtain information on the effectiveness of a businessmachine. Several division heads will be interviewed by telephone and asked torate the equipment on a numerical scale. The divisions are in North America,Europe, and Asia. Hence, stratified sampling is used. The costs are larger forinterviewing division heads located outside North America. Table Q5(c) givesthe costs per interview, approximate variances of the ratings, and N that havebeen established. Suppose the corporation wish to take a stratified randomsample of 50 division heads among the populations established.Table Q5(c)Population, NStratumLocationCostsVariance, o?1North America1129.2.25EuropeAsia68253.24339363.24(i)Calculate the random sample by using the proportional allocation tochoose 50 division heads among the populations established.(ii)Calculate the random sample by using the optimal allocation to choose50 division heads among the populations established.

Consider the provided data that shows the costs per interview, variances of the ratings, and the…

Answered: A corporation wishes to obtain…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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In a certain population, the mean price of the stock prices was 230, the median was 255, the variance was 1225, the first quartile was 240. and the third quartile was 270. Find the second quartile ? What percentage of data values is less than or equal 270? OApproximately 68%. OApproximately 50% OApproximately 75% OApproximately 25% OApproximately 95% OApproximately 100% What is the coefficient of variation? 018.78% 0532.61% 015.22% 0657.14% O14.89% Determine whether the data value 160 is an outlier or not ? OYes. ONo. OCan't conclude.
The weekly income for a taxi driver during the first three weeks of lock down were recorded as follows: What is the variance for the taxi's driver's weekly income?
You may need to use the appropriate technology to answer this question. Forty-minute workouts of one of the following activities three days a week will lead to a loss of weight. Suppose the following sample data show the number of calories burned during 40-minute workouts for three different activities. Swimming Tennis Cycling 413 410 385 380 485 255 425 455 295 400 420 397 422 525 273 Do these data indicate differences in the amount of calories burned for the three activities? Use a 0.05 level of significance. State the null and alternative hypotheses. O H,: Median, = Median, = Medianc H: Mediang + Median, + Median. O H.: All populations of calories burned are identical. H: Not all populations of calories burned are identical. O Ho: Mediang = Median, = Medianc H: Mediang Median. O H,: Not all populations of calories burned are identical. H: All populations of calories burned are identical. O Ho: Mediang + Median, + Medianc H: Mediang = Median, = Median. Find the value of the test…
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11. The variance for the weight of a breed of cattle is 256 lb2. The mean is 453 lb. How heavy would the animal have to be to be in the top 16% of the herd? Select one:a. 719 lbs.b. 479 lbs.c. 511 lbs.d. 463 lbs.
The U.S. National Center for Health Statistics complies birth statistics and publishes the results in vital statistics of the United States. The Center has historically believed that the mean of all newborns in the U.S. has been no less than 6.95 pounds. A sample of babies is selected so that the center can revise its belief. The following birth weights, in pounds are recorded: 7.4, 6.0, 8.6, 4.5, 2.0, 7.9, 4.0, 2.6, 5.9, 7.3, 7.3, 7.0, 6.3, 8.1, 7.1, 7.3, 6.6, 5.2, 9.8, 8.0, 10.9, 6.5, 3.8, 5.0, 8.0 a). At 5% level of significance, do these data provide sufficient evidence to refute the Center’s belief? Your conclusion must be in terms of the P-Value as well as setting up a Rejection Region. You must show all necessary work. b). Which statistical distribution should be applied in this situation and why? Explain carefully.
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a) Determine the values of * and **. b) Give the unbiased point estimate for the average monthly earning from Hyundai Vehicles. c) Give the unbiased point estimate for the variance of monthly earning from Hyundai Vehicles.
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