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MINI CASE 4.1
Surveys provide valuable information for organizations and governments to measure their performance, monitor strategies and policy decisions, and inform decisions. The value of this information is measured against the cost to collect the data and analyze it. In times of economic downturn the information value will inevitably be scrutinized and decisions are sometimes taken to curtail or restrict surveys even though there may be strong evidence to suggest otherwise.
Since 1971 the annual ONS General Lifestyle Survey has been undertaken on behalf of a number of government departments. The survey provides information on smoking and drinking habits and use of health services, as well as looking at the issues of housing, employment, education and income.
The main funds for this survey come from the NHS who contribute £300 000 pa. In April 2011 the BBC reported that the NHS has proposed that because of government cut-backs this contribution should cease. The threat to this survey prompted responses from the ONS and public health experts. The head of the UK Statistics Authority Sir Michael Scholar said the ‘ability of policy-makers to make informed decisions will be hit. . . and will seriously undermine the UK's ability to monitor key trends affecting public health'. In support of this statement public health experts say ‘the data in the survey is critical to developing effective health policies and holding the government to account for its actions'.
Moving until all the nodes 1,2,......,m have been visited at least once. Starting at node 0, find the probability that node i is the last node visited, i=1,.....m.
the proportion of male births to female births is 5149. in families with 6 offsprings what is the expected frequency of
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Estimate the difference between the proportion of Gen Y and the proportion of Gen X that made a donation via text message using a 99% confidence interval. Provide an interpretation of both the interval and the associated confidence level.
As a manager, what are some benefits of applying probability concepts to solve business-related problems? Would business decisions suffer without probability concepts? Explain.
Airline company officials find that 86% of all people who make reservations show up for their flights. If an airline has accepted 240 reservations and if there are 213 available seats
Calculate a confidence level at 95% to get an interval estimate for proportion?
In a regression analysis involving 27 observations, the following estimated regression equation was developed.
Claims involving automobiles are selected at random. What is the probability that six or more claims (x greater than or equal to 6) will be made by males under 25?
an important feature of golf cart batteries is the number of minutes they will perform before needing to be recharged.
For a normal probability distribution, about 95 percent of the area under normal curve is within plus and minus two standard deviations of the mean and practically all (99.73 percent) of the area.
the downtown parking authority of tampa florida reported the following information for a sample of 241 customers on the
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