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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…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.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.
- A company studied the number of lost-time accidents occurring at its Brownsville, Texas, plant. Historical records show that 6% of the employees suffered lost-time accidents last year. Management believes that a special safety program will reduce such accidents to 4% during the current year. In addition, it estimates that 15% of employees who had lost-time accidents last year will experience a lost-time accident during the current year. a. What percentage of the employees will experience lost-time accidents in both years (to 2 decimals)? % b. What percentage of the employees will suffer at least one lost-time accident over the two-year period (to 2 decimals)?One of your duties is the selection and disposal of boxes of obsolete files. According to regulations, ordinary files become obsolete after 24 months, confidential files after 36 months and classified files after 48 months. Which of the following boxes of files can be disposed of: A box containing ordinary files dated 26 months ago and classified files dated 34 months ago. A box containing ordinary files dated 38 months ago and confidential files dated 28 months ago.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.
- 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 explainThe process for cleaning up waste in a nuclear reactor core room eliminates 85% of the waste present in the area. If there is 1.7 kg of waste in the room at the beginning of the monitoring period and 2 kg of additionalwaste are generated each week, determine a recurrence relation and initial conditions describing the amount wn, of waste in the core room at the end of week n of the monitoring period.Suppose a company charges a premium of $150 per year for an insurance policy for storm damage to roofs. Actuarial studies show that in case of a storm, the insurance company will pay out an average of $8000 for damage to a composition shingle roof and an average of $12,000 for damage to a shake roof. They also determine that out of every 10,000 policies, there are 7 claims per year made on composition shingle roofs and 11 claims per year made on shake roofs. What is the company’s expected value (i.e., expected profit) per year of a storm insurance policy? What annual profit can the company expect if it issues 1000 such policies? Determine the probability of a composition shingle roof claim out of 10,000 = ______ Determine the probability of a shake roof claim out of 10,000 = ______ How many claims are made out of 10,000? = _______ What is the probability of no claims out of 10,000? = _______ How much does each shingle roof claim cost the company, don’t forget each person pays $150…
- Suppose that there are 4 deaths due to stomach can- cer among workers in a tire plant from 1/1/64 to 12/31/83, while 2.5 are expected based on U.S. mortality rates. Provide a 95% CI for the expected number of deaths from stomach cancer over 20 years among the tire workers. Is the number of cases of stomach cancer excessive?Suppose 24% of students at Florida University are business students. Of those, 28% are Econ majors.What percent of Florida University students are Econ majors? Round your answer to three decimal places.A building contractor has a contract which will expire in 30 days. He has 80 men on the job and can finish the work in 50 days. The wage per day of 40 men is P20 and that of the other 40 men is P18 each for 8 hours of work per day. The fine or liquidated damages for the delay in work is P400 per day. How many more men should the contractor add in order to enable him to complete the work on time? Assuming that the additional men will have a wage of P20 each per day, will the contractor save money by employing enough men to enable him to complete the work on time or not adding men and paying the liquidated damages? How much is the saving if any? No overtime.