The following contingency table records some information about a sample of visitors to Old Fort William over a long weekend in August. Local Other Canadian Non-Canadian Total Young Child Teen 40 75 50 35 20 150 25 95 Young Adult Mid Aged Adult Senior Adult 125 200 140 465 100 195 85 380 120 165 125 410 Total 410 685 405 1500 If we expect that each age group should have the same proportion of origins as the total sample (all age groups and all origins), what is the expected number of 'local 'young adults'? 465 0.273 0.310 127 154

The table below shows the average income by age group for the residents of one town in the year 1998. The average incomes for each age group are estimates based on a sample of size 100 from each group. Age group Average income 18 - 24 $17,180 25 - 39 $26,661 40 - 54 $32,471 55 – 70 $25,960 Over 70 $18,241 Classify the study as either descriptive or inferential.

21. The Nielsen Home Technology Report provided information about home technology and its usage. The following data are the hours of personal computer usage during one week for a sample of 50 persons. 4.1 1.5 10.4 5.9 3.4 5.7 1.6 6.1 3.0 3.7 WEB file 4.2 11.1 3.1 4.8 2.0 14.8 5.4 3.9 4.1 3.5 4.1 4.1 8.8 5.6 4.3 3.3 7.1 10.3 6.2 7.6 Computer 10.8 2.8 9.5 12.9 12.1 0.7 4.0 9.2 4.4 5.7 7.2 6.1 5.7 5.9 4.7 3.9 3.7 3.1 6.1 3.1 Summarize the data by constructing the following: A frequency distribution (use a class width of three hours) b. A relative frequency distribution A histogram d. An ogive Comment on what the data indicate about personal computer usage at home. a, C.

Another type of painted ceramic vessel is called three-circle red-on-white ( Mimbres Mogollon Archaeology). At four different sites in the Wind Mountain archaeological region, the number of such sherds was counted in local dwelling excavations. Site I Site II Site III Site IV 15 13 38 15 22 2 20 21 4 31 15 13 15 7 44 34 17 23   12   11   12 Shall we reject or not reject the claim that there is no difference in the population mean three-circle red-on-white sherd counts for the four sites? Use a 5% level of significance. (a) What is the level of significance?   (b) Find SSTOT, SSBET, and SSW and check that SSTOT = SSBET + SSW. (Use 3 decimal places.) SSTOT =   SSBET =   SSW =   Find d.f.BET, d.f.W, MSBET, and MSW. (Use 3 decimal places for MSBET, and MSW.) dfBET =   dfW =   MSBET =   MSW =   Find the value of the sample F statistic. (Use 3 decimal places.)What are the degrees of freedom??(numerator)?(denominator)(c) Find the P-value of the sample…