Question 3

Part 1

Response rate 75%

                    obser-   population mean of     variance of
group         mean  vations  variance   complement  difference in means  z

all responses 27.37   317      5679.63
all museums   27.92   307      5847.72
small         15.52   217                  57.82         92.22        -0.46
emerging      34.06   158                  21.41         76.51         0.17
minority      11.05    21                  28.53        299.89        -0.06
rural         15.91   128                  36.50         78.61        -0.26

Part 2

Response rate 58%

group         mean  observations  population variance

all responses 6.84      246            133.83
all museums   7.00      239            136.83
small         3.63      160
emerging      8.47      126
minority      3.18       17
rural         4.77       92