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- The manager of human resource department wants to see if there is anyrelationship between staffs’ salary (in 1000TK) and their experience (in years).---------------------------+| id salary experience ||--------------------------|| 1 15 15.5 || 2 18 17 || 3 16.5 17 || 4 16.3 18 || 5 22 19 ||--------------------------|| 6 19.9 18 || 7 24 20 || 8 18.5 18.5 || 9 28.3 22 || 10 17.5 19.5 ||--------------------------|| 11 24.5 19.5 || 12 16.2 17.5 |---------------------------------(a) Write down the regression model of salary on experience indicating dependentvariable, independent variables and the associated parameters.(b) Obtain the least squares estimates of the model parameters and interpret them.(c) Draw a scatter plot and the regression line in the same coordinate.(d) Obtain TSS, RSS and ESS.(e) Obtain R-square value and interpret the result.(f) Obtain the estimate of the error variance.(g) Obtain 95% confidence interval for slope and interpret it.(h) Test the hypothesis that there is…An electronics retailer is developing a model for insur-ance policies on new cell phone purchases. It estimates that 60% of customers never make a claim, 25% of cus-tomers require a small repair costing an average of $50, and 15% of customers request a full refund costing $200.What is the long-term average cost the retailer shouldexpect to pay to its customers per claim?Suppose for a particular process that the bottleneck cycle time is 54 seconds, and raw processing time is 345 seconds. If there are 9 customers in this system already, and then you walk up and join the line at Station 1, what is your expected lead-time to move through the entire process? Whole number value, no decimals.
- In a geographical location with a mid-year population of 1,000,000 (1 million) there were 1125 deaths during an entire year due to all causes combined.Out of those 1125 deaths, 185 deaths were due to causes related to pregnancy and 165 deaths were among children less than one-year old. There were 650 live births that year in that location. Please select the correct option(s) from the following. a. The maternal mortality ratio was 25 per 100 live births b. Infant mortality was 17 per 100,000live births c. The infant mortality was 254 per 1,000 live births d. The maternal mortality was 285 per 1,000 live birthsOne of the characteristics of the workday for cargo vehicle drivers is that if the driving period is less than 5 hours, the driver is entitled to a 24-minute rest break. If a driver has a driving period of 3 hours and 30 minutes, what percentage of the driving period does the rest period represent?The highway department wants to estimate the proportion of vehicles on a Toll road at KM 25 between midnight and 5:00 A.M. The department head wanted to see how many 18-wheel tractor trailers passed along the road. These estimates will be used to determine road improvement and construction considerations and in road patrol planning. The department head asked researchers to calculate the estimated vehicles at different locations on the inter-island road over the past 7 days. Of the 3,481 vehicles counted, 927 were 18 wheelers. However, out of a total of 927, there were 74 who had accidents, so the sample was calculated based on the results of reducing the number of accidents. Determine the point estimate for the proportion of vehicles traveling on KM 25 during this time period which are 18 wheelers! (Assume the confidence level is 99%). What is the benefit of estimating the estimated value in this case (analyze the answers you have obtained)?
- if in a 2 party race, party 1 is leading in the age category 45 years and under by 10% and that category represents 60% of the electorate and party #2 is leading in the over 45 years by 10% and that category represents 40% of the electorate. Show in percentage the deficit that party 2 needs to make up.What is the predicted wage of a 25 year old female with 15 years of education and 5 years of experiences?We wish to demonstrate that the average time to graduate from college is affected by the students having taken AP calculus in high school. Specifically we wish to demonstrate that students who have taken AP calculus in high school gradate an average of at most 0.25 years sooner than students who have not taken AP calculus in high school. If we let μ1 demote the average time to graduate for students who have not taken AP calculus and μ2 denote the average time to graduate for students who have taken AP calculus, then select the appropriate alternative hypothesis: a. μ1-μ2 = 0 b. μ1-μ2-0.25 < 0 c. μ1-μ2-0.25>0 Please explain
- Engr. Dacara is given a load to teach Work Study and Measurement to his IE class. During the first meeting of the semester, he targeted to deliver a total of 54 home activities will be allocated for each student enrolled to accomplish the 18-week semester from February to June. a. How many home activities should each student finish per week to meet the deadline? b. Due to delays on enrollment and other factors, 33.33% of the semester time was lost. What will be the new set-up for each student to finish to meet the deadline?We wish to demonstrate that the average time to graduate from Tulane is affected by the students having taken AP calculus in high school. Specially, we wish to demonstrate that students who have taken AP calculus in high school graduate an average of more than 0.25 years sooner than students who have not taken AP calculus in high school. If we let denote the average time to graduate for students who have not taken AP calculus and denotes the average time to graduate for students who have taken AP calculus, then select the appropriate alternative hypothesis.If the mortality rate under one month infants in a country is 2.5 per thousand, and the same rate for infants up to two months is 6 per thousand: A) What is the approximate mortality rate of 1000 infants in the second month of life? B) What is the probablity that 2500 babies born in that country in one day will reach one month old?