1. This question concerns the variable "number living together."

a. What is the average number of people living together off-campus?

b. What is the median number of people living together?

c. What is the standard deviation of the number of people living together?

d. 95% confidence interval for the average number of people living together.

e. Fully interpret the interval: what exactly does it tell you?

2. This question concerns the variable "individual rent," which represents the individual's share of the rent paid for off-campus housing.Note that many survey respondents did not report their individual rent.

a. How many students reported the rent that they pay individually?

b. What are the minimum and maximum individual rents paid by students in the sample?

c. What is the average individual rent? What is the standard deviation of the rent?

d. What percentage of survey respondents left this question blank?Is the fact that some students chose not to answer the question likely to bias the results upward, downward, or not in any particular direction? Explain your answer.

e.95% confidence interval for the average rent paid individually by off-campus students.

f. Use your answer to estimate how much a student living off-campus should budget each year for rent. Explain your answer.

3. Nationwide, the average household size in 2010 was determined to be 2.58 people (www.census.gov). Conduct a hypothesis test at a 5% significance level to determine whether there is evidence that the household size for Albers students differsfrom the national average.

a. State the null and alternative hypothesis for the test.

b. Calculate the appropriate test statistic (t-stat) for the test.

c. What is the critical value for the test?

d. Do you reject, or not reject, the null hypothesis? Explain your decision based on the critical value.

e. Find the p-value for the hypothesis test (use Excel's T.DIST.2T function).

f. Using the p-value,explain your decision regarding the null hypothesis (rejectot reject).

g. Summarize your conclusion in a sentence or two: what does the test show about household size?

4. According to the Bureau of Labor Statistics (BLS), the average renter in the US pays $12,843 per year in rent, or $1,070 per month.Conduct a hypothesis test a 5% significance level to determine whether there is strong evidence that Seattle U students pay less rent than the national average.

a. State the null and alternative hypothesis for the test.

b. Calculate the appropriate test statistic (t-stat) for the test.

c. What is the critical value for the test?

d. Do you reject, or not reject, the null hypothesis? Explain your decision based on the critical value.

e. Find the p-value for the hypothesis test (use the appropriate Excel function).

f. Using the p-value,explain your decision regarding the null hypothesis (rejectot reject).

g. Summarize your conclusion in a sentence or two: what does the test show about average rent?

10 TO UNDER 20 98144 INTERNATIONAL DISTRICT APARTMENT 2600 650 10 TO UNDER 20 98122 FIRST HILL TOWNHOME OR HOUSE 1500 500 UNDER 10 98144 OTHER (Mt. Baker) TOWNHOME OR HOUSE 2500 500 W UNDER 10 98122 CAPITOL HILL APARTMENT 3980 995 UNDER 10 98122 FIRST HILL APARTMENT 2200 733 3 UNDER 10 98122 FIRST HILL APARTMENT 1455 675 UNDER 10 98122 FIRST HILL TOWNHOME OR HOUSE 2800 550 SUN 20 TO UNDER 40 98122 CAPITOL HILL TOWNHOME OR HOUSE 2400 600 20 TO UNDER 40 98102 CAPITOL HILL APARTMENT 1050 350 LO TO UNDER 20 98109 LAKE UNION APARTMENT 2015 400 UNDER 10 98102 CAPITOL HILL APARTMENT 1990 995 60 OR MORE 98027 OTHER (Issaqual) APARTMENT 1030 515 IN 10 TO UNDER 20 98125 OTHER (Northgate) TOWNHOME OR HOUSE 4550 1200 U W 20 TO UNDER 40 98106 OTHER (west seattle) TOWNHOME OR HOUSE 700 700 UNDER 10 98122 CAPITOL HILL APARTMENT 1600 1600 N P 20 TO UNDER 40 98005 OTHER (Bellevue) TOWNHOME OR HOUSE 200 200 UNDER 10 98122 FIRST HILL APARTMENT 1000 1000 LO TO UNDER 20 98122 FIRST HILL APARTMENT 1800 700 NW 60 OR MORE 98133 OTHER (Shoreline) APARTMENT 500 500 UNDER 10 98122 FIRST HILL APARTMENT 2200 450 20 TO UNDER 40 98004 OTHER (Bellevue) APARTMENT 1625 1625 20 TO UNDER 40 98133 OTHER (Northgate) RENTED ROOM IN HOME 400 400 20 TO UNDER 40 98125 OTHER (Lake City) TOWNHOME OR HOUSE 737 737 60 OR MORE 98005 OTHER (Bellevue) TOWNHOME OR HOUSE 950 950 20 TO UNDER 40 98004 OTHER (Bellevue) APARTMENT 2500 1500 W 20 TO UNDER 40 98125 OTHER (Northgate) APARTMENT 1600 800 20 TO UNDER 40 98112 OTHER (Montlake) TOWNHOME OR HOUSE 1200 600 J N UNDER 10 CAPITOL HILL TOWNHOME OR HOUSE 1600 750UNDER 10 98122 FIRST HILL APARTMENT 2200 733 W UNDER 10 98122 FIRST HILL APARTMENT 1455 675 UNDER 10 98122 FIRST HILL TOWNHOME OR HOUSE 2800 550 TO UNDER 40 98122 CAPITOL HILL TOWNHOME OR HOUSE 2400 600 TO UNDER 40 98102 CAPITOL HILL APARTMENT 1050 350 TO UNDER 20 98109 LAKE UNION APARTMENT 2015 400 UNDER 10 98102 CAPITOL HILL APARTMENT 1990 995 50 OR MORE 98027 OTHER (Issaqual) APARTMENT 1030 515 TO UNDER 20 98125 OTHER (Northgate) TOWNHOME OR HOUSE 4550 1200 U W TO UNDER 40 98106 OTHER (west seattle) TOWNHOME OR HOUSE 700 700 UNDER 10 98122 CAPITOL HILL APARTMENT 1600 1600 N P TO UNDER 40 98005 OTHER (Bellevue) TOWNHOME OR HOUSE 200 200 UNDER 10 98122 FIRST HILL APARTMENT 1000 1000 TO UNDER 20 98122 FIRST HILL APARTMENT 1800 700 NWHI 60 OR MORE 98133 OTHER (Shoreline) APARTMENT 500 500 UNDER 10 98122 FIRST HILL APARTMENT 2200 450 TO UNDER 40 98004 OTHER (Bellevue) APARTMENT 1625 1625 UI HA TO UNDER 40 98133 OTHER (Northgate) RENTED ROOM IN HOME 400 400 TO UNDER 40 98125 OTHER (Lake City) TOWNHOME OR HOUSE 737 737 60 OR MORE 98005 OTHER (Bellevue) TOWNHOME OR HOUSE 950 950 W HUT TO UNDER 40 98004 OTHER (Bellevue) APARTMENT 2500 1500 TO UNDER 40 98125 OTHER (Northgate) APARTMENT 1600 800 TO UNDER 40 98112 OTHER (Montlake) TOWNHOME OR HOUSE 1200 600 IN UNDER 10 CAPITOL HILL TOWNHOME OR HOUSE 1600 750 JUIN UNDER 10 98122 CAPITOL HILL TOWNHOME OR HOUSE 3750 570 TO UNDER 20 98144 CENTRAL DISTRICT APARTMENT 1595 1195 TO UNDER 20 98122 CENTRAL DISTRICT APARTMENT 2010 670 UNDER 10 98122 FIRST HILL APARTMENT 1800 450 TO UNDER 20 98122 CAPITOL HILL APARTMENT 1650 825 UNDER 20 98104 FIRST HILL APARTMENT 1400 1400UNDER 10 98122 CAPITOL HILL APARTMENT 1585 150 10 TO UNDER 20 98122 FIRST HILL TOWNHOME OR HOUSE 2800 645 UNDER 10 98122 CAPITOL HILL APARTMENT 2260 565 UNDER 10 98122 FIRST HILL APARTMENT 1590 795 60 OR MORE 90133 OTHER (Shoreline) APARTMENT 1400 800 N WA W HN NAAN 10 TO UNDER 20 98122 CAPITOL HILL APARTMENT 1300 1300 UNDER 10 98122 FIRST HILL APARTMENT 1700 720 10 TO UNDER 20 98122 FIRST HILL TOWNHOME OR HOUSE 2800 750 UNDER 10 98122 FIRST HILL TOWNHOME OR HOUSE 2349 783 10 TO UNDER 20 98122 FIRST HILL APARTMENT 1400 750NUMBER LIVING ZIP CODE NEIGHBORHOOD LIVING SITUATION TOTAL RENT INDIVIDUAL RENT TOGETHER 98275 OTHER (Mukilteo) TOWNHOME OR HOUSE 1200 400 98122 CAPITOL HILL APARTMENT 2000 1000 98122 CAPITOL HILL APARTMENT 180 900 98122 CAPITOL HILL TOWNHOME OR HOUSE 1750 875 98122 CAPITOL HILL APARTMENT 975 98122 CAPITOL HILL TOWNHOME OR HOUSE 2500 840 A H W N U W A N N W W 98133 OTHER (Northgate) RENTED ROOM IN HOME 850 98104 INTERNATIONAL DISTRICT APARTMENT 1735 876.5 98104 INTERNATIONAL DISTRICT APARTMENT 1400 470 98118 OTHER (Othelo) APARTMENT 1530 98102 CAPITOL HILL APARTMENT 98101 CAPITOL HILL APARTMENT 1395 350 98104 INTERNATIONAL DISTRICT APARTMENT 1400 520 98104 CAPITOL HILL APARTMENT 1100 1100 98144 CAPITOL HILL APARTMENT 1700 1700 98115 OTHER (Northgate) TOWNHOME OR HOUSE 525 CAPITOL HILL TOWNHOME OR HOUSE 2600 700 98122 FIRST HILL APARTMENT 1455 1455 98108 BEACON HILL TOWNHOME OR HOUSE 2200 380 HAHNANNNUHAUPHWA 98133 OTHER (Northgate) APARTMENT 1000 98122 FIRST HILL APARTMENT 1850 1110 98122 FIRST HILL APARTMENT 2400 1200 98122 CAPITOL HILL APARTMENT 3900 975 98122 CAPITOL HILL APARTMENT 1950 975 OTHER APARTMENT 98133 OTHER (Shoreline) APARTMENT 1339 334.75 98105 UNIVERSITY DISTRICT APARTMENT 1400