The output for a regression analysis is given above. Unfortunately, some of the values are missing. Calculate the value of B.
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- What level should production be fixed in order to minimize averge coastPond’s Age-Defying Complex, a cream with alpha-hydroxy acid, advertises that it can reduce wrinkles and improve the skin. In a study published in Archives of Dermatology (June 1996), 33 women over age 40 used a cream with alpha-hydroxy acid for twenty-two weeks. At the end of the study period, 23 of the women exhibited skin improvement (as judged by a dermatologist). B.) Calculate the estimate for this parameter.Joan’s Nursery specializes in custom-designed landscaping for residential areas. The estimated labour cost associated with a particular landscaping proposal is based on the number of planting of trees, shrubs, and so on to be used for the project. For cost-estimating purposes, managers use two hours of labour time for the planting of a medium-sized tree. Actual times from a sample of 10 planting during the past month follow (times in hours). 1.7 1.5 2.6 2.2 2.4 2.3 2.6 3.0 1.4 2.3 Test to see whether the mean tree-planting time differs from two hours. Hyp: Dec Rule: Calculations: Conclusions:
- The actual demand of a product for 6 months are summarized in Table below:Actual Demand ValuesMonth (t ) Demand ( ) t D1 3002 4503 7004 9005 12006 1400i. Find three months weighted moving averages by assuming the weights 1 W = 0.15,2 W = 0.36 and 3 W = 0.49.ii. Compute the mean forecast errors.iii. Compute the mean square erroriv. Compute the mean absolute deviation.v. Mean absolute percent error (MAPE)The mean yield from process A is estimated to be 80 ± 5, where the units are percent of a theoretical maximum. The mean yield from process B is estimated to be 90 ± 3. The relative increase obtained from process B is therefore estimated to be (90 − 80)/80 = 0.125. Find the uncertainty in this estimate.The following table shows predicted product demand using your particular forecasting method along with the actual demand that occurred: FORECAST ACTUAL 1,515 1,585 1,415 1,515 1,715 1,615 1,755 1,680 1,805 1,730 Compute the tracking signal using the mean absolute deviation and running sum of forecast errors.
- Suppose there are three fare classes in an airline fares p1 = $300, p2 = $200, and p3 = $100. You want to utilize the EMSR-b heuristic to calculate the protection level for classes 1 and 2 together. The demand distribution for class 1 is Normal with mean 50 and standard deviation 5. The demand distribution for class 2 is Normal with mean 75 and standard deviation 12. What is the price for the virtual class 1-2 under EMSR-b?The prices and the numbers of various items produced by a small machine and stamping plant are reported below. Use 2010 as the base. 2010 2018 Item Price (in $) Quantity Price (in $) Quantity Washer 0.07 17,000 0.10 20,000 Cotter pin 0.04 125,000 0.03 130,000 Stove bolt 0.15 40,000 0.15 42,000 Hex nut 0.08 62,000 0.10 65,000 a. Determine the Laspeyres price index. (Round your answer to 2 decimal places.) b. Determine the Paasche price index. (Round your answer to 2 decimal places.)Joan's Nursery specializes in custom-designed landscaping for residential areas. The estimated labor cost associated with a particular landscaping proposal is based on the number of plantings of trees, shrubs, and so on to be used for the project. For cost-estimating purposes, managers use two hours of labor time for the planting of a medium-sized tree. Actual times from a sample of 10 plantings during the past month follow (times in hours). 1.8 1.4 2.7 2.1 2.3 2.3 2.6 3.0 1.5 2.3 (c) Compute the sample standard deviation. (Round your answer to three decimal places.) (d) What is the test statistic? (Round your answer to three decimal places.) What is the p-value? (Round your answer to four decimal places.) p-value = (e) What is your conclusion? Do not reject H0. We can conclude that the mean tree-planting time differs from two hours. There is a reason to change from the two hours for cost estimating purposes. Reject H0. We can conclude that the mean…
- Joan's Nursery specializes in custom-designed landscaping for residential areas. The estimated labor cost associated with a particular landscaping proposal is based on the number of plantings of trees, shrubs, and so on to be used for the project. For cost-estimating purposes, managers use two hours of labor time for the planting of a medium-sized tree. Actual times from a sample of 10 plantings during the past month follow (times in hours). 1.8 1.6 2.5 2.1 2.4 2.3 2.6 3.0 1.4 2.3 With a 0.05 level of significance, test to see whether the mean tree-planting time differs from two hours. (A)State the null and alternative hypotheses. A. H0: μ ≥ 2 Ha: μ < 2 B. H0: μ > 2 Ha: μ ≤ 2 C. H0: μ = 2 Ha: μ ≠ 2 D. H0: μ ≤ 2 Ha: μ > 2 E. H0: μ < 2 Ha: μ ≥ 2 (B)Compute the sample mean. _______________ (C)Compute the sample standard deviation. (Round your answer to three…Joan's Nursery specializes in custom-designed landscaping for residential areas. The estimated labor cost associated with a particular landscaping proposal is based on the number of plantings of trees, shrubs, and so on to be used for the project. For cost-estimating purposes, managers use two hours of labor time for the planting of a medium-sized tree. Actual times from a sample of 10 plantings during the past month follow (times in hours). 1.8 1.6 2.5 2.1 2.4 2.3 2.6 3.0 1.4 2.3 With a 0.05 level of significance, test to see whether the mean tree-planting time differs from two hours. What is the test statistic? (Round your answer to three decimal places.) _____________________. What is the p-value? (Round your answer to four decimal places.) p-value =__________________. (e)What is your conclusion?(multiple choice) A. Do not reject H0. We can conclude that the mean tree-planting time differs from two hours. There is a reason to change from the two hours for cost…Joan's Nursery specializes in custom-designed landscaping for residential areas. The estimated labor cost associated with a particular landscaping proposal is based on the number of plantings of trees, shrubs, and so on to be used for the project. For cost-estimating purposes, managers use two hours of labor time for the planting of a medium-sized tree. Actual times from a sample of 10 plantings during the past month follow (times in hours). 1.6 1.4 2.7 2.3 2.5 2.3 2.6 3.0 1.3 2.3 With a 0.05 level of significance, test to see whether the mean tree-planting time differs from two hours. (a) State the null and alternative hypotheses. H0: μ > 2,Ha: μ ≤ 2 H0: μ ≤ 2, Ha: μ > 2 H0: μ = 2, Ha: μ ≠ 2 H0: μ < 2, Ha: μ ≥ 2 H0: μ ≥ 2, Ha: μ < 2 (b) Compute the sample mean. (c) Compute the sample standard deviation. (Round your answer to three decimal places.) (d) What is the test statistic? (Round your answer to three decimal places.) What is the…