Answer Happy

40. A suburban hotel derives its gross income from its hotel and restaurant operations. The owners are interested in the relationship between the number of rooms occupied on a nightly basis and the revenue per day in the restaurant. Below is a sample of 25 days (Monday through Thursday) from last year showing the restaurant income and number of rooms occupied f 41 Day 1 234 5 6 7 8 9 10 11 12 13 Income $1,452 1,361 1,426 1,470 1,456 1,430 1,354 1,442 1,394 1,459 1,399 1,458 1,537 Occupied 47 23 7 21 38 37 25 23 4 45 16 30 2 H 222222 39 29 44 42 54 Day 14 15 456 16 17 ur. 18 19 20 21 23 24 25 Income $1,425 1,445 1,439 1,348 1,450 1,431 1,446 1,485 1,405 1,461 1,490 1,426 Occupied 27 34 15 19 38 44 47 43 38 51 61 39 Use a statistical software package to answer the following questions, a: Does the breakfast revenue seem to increase as the number of occupied rooms increases? Draw a scatter diagram to support your conclusion. b. Determine the correlation coefficient between the two variables. Interpret the value. c. Is it reasonable to conclude that there is a positive relationship between revenue and occupled rooms? Use the .10 significance level. d. What percent of the variation in revenue in the restaurant is accounted for by the num- ber of rooms occupied? The table helow chowe the number of onr fin