The 2016 Minneapolis Resident Survey was a questionnaire that the City of Minneapolis issued to its randomly chosen residents. In this survey, 1,155 of the 2,307 respondents (50.1%) rated their neighborhood as a very good place to live. After adjusting for the demographic characteristics of the population, the City of Minneapolis concluded with 95% confidence that the true proportion of all residents considering their neighborhood as a very good place to live is between 0.44 and 0.50.
Which of the following statements are correct?
a. The Minneapolis Resident Survey was an observational study.
b. The Minneapolis Resident Survey was an experiment.
c. Figure 50.1% is a descriptive statistic for the sample.
d. Figure 50.1% is a statistical inference for the population.

Alocal club is selling christmas trees and deciding how many to stock for the month of december. if demand is normally distributed with a mean of 100 and standard deviation of 20, trees have no salvage value at the end of the month, trees cost $20, and trees sell for $50 what is the service level?

Amap from a trade development commission or chamber of commerce can be more useful than google maps for identifying

David consumes two things: gasoline (g) and bread (b). david's utility function is u(g, b) = 10g^0.25 b^0.75. use the lagrange technique to solve for david's optimal choices of gasoline and bread as a function of the price of gasoline, p_g, the price of bread, p_b, and his income m. with recent decrease in the price of gasoline (maybe due to external shock such as shale gas production) does david increase his consumption of gasoline? for david, how does partial differential g/partial differential p_g depend on his income m? that is, how does david's change in gasoline consumption due to an increase in the price of gasoline depend on his income level? to answer these questions, find the cross-partial derivative, |partial differential^2 g/partial differential m partial differential p_g.