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Air travel on Mountain Airlines for the past 18 weeks was: Use regression to develop a forecast for the expected number of passengers for the next three weeks. (Round your answers to two decimal points.) Lovely Lawns, Inc., intends to use sales of lawn fertilizer to predict lawn mower sales. The store manager estimates a probable sixweek lag between fertilizer sales and mower sales. The pertinent data are: a. Determine the correlation between the two variables. (Round your answer to four decimal points.) b. Obtain a linear regression line for the data. (Round your answers to four decimal points.) An electrical contractor's records during the last five weeks Indicate the number of job requests: Click here for the Excel Data File Predict the number of requests for week 6 using each of these methods: a. Nalve. b. A four-perlod moving average. (Round your answer to 2 declmal places.) c. Exponentlal smoothing with =0.10. Use 28 for week 2 forecast. (Round your Intermedlate forecast values and flnal answers to 2 declmal places.)