Suppose these data show the number of gallons of gasoline sold by a gasoline distributor in Bennington, Vermont, over the past 12 weeks. Sales (1,000s of gallons) Week 1 2 3 4 5 6 7 8 to ch 9 o Week 11 12 1 2 3 4 5 6 7 8 9 (a) Compute four-week and five-week moving averages for the time series. 5-Week 4-Week Moving Moving Average Forecast 10 12 17 21 19 24 18 16 21 18 23 21 17 15 21 Time Series Value 22 19 24 18 16 21 18 23 21 15 22 20.25 20.5 Average Forecast 19.25 19.75 18.25 19.5 20.75 19.25 ✓ ✓ 19.8 19.6 19.6 19.4 19.2 19.8 19.6 ✓ ✓ (b) Compute the MSE for the four-week moving average forecasts. (Round your answer to two decimal places.) 19.69 X Compute the MSF for the five-week moving average forecasts. (Round your answer to two decimal places)

Find the mean hourly cost when the cell phone described above is used for 240 minutes.

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Delmarva Power is a utility company that would like to predict the monthly heating bill for a household in Kent County during the month of January. A random sample of 18 households in the county were selected and their January heating bill recorded. This data is shown in the table below along with the square footage of the house (SF), the age of the heating system in years (Age,) and the type of heating system (heat pump = 1 or natural gas = 0). Household Bill SF Age Type 1 $255 2,070 7 Natural Gas 2 $286 1,909 17 Natural Gas 3 $296 2,004 8 Natural Gas 4 $300 2,307 22 Natural Gas 5 $305 3,021 5 Natural Gas 6 $317 2,683 14 Natural Gas 7 $321 1,511 8 Natural Gas 8 $321 2,836 3 Natural Gas 9 $339 2,553 20 Natural Gas 10 $349 2,497 11 Natural Gas 11 $369 2,103 12 Heat Pump 12 $374 2,486 18 Heat Pump 13 $381 2,279 19 Heat…