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A city law requires all buildings to have a fire safety inspection at least once every three years. Concerned that some of these inspections are not being done, the mayor orders a survey to see what fraction of the city's buildings may be out of compliance. Results for the sample appear in the table below.
For which of the building classifications could you use our methods of inference to create 95% confidence intervals for the proportion of buildings lacking the required inspection?
Test whether there is any change in IQ after the training program (The absolute value of 1 for 4 degrees of freedom at 1% level for one-tailed and two tailed tests are 3.747 and 4.604 respectively)
If a company in emerging markets is randomly selected, what is the probability that its price-per-earnings ratio is above 17.5, which, according to Lemaigre, is the average for companies in the developed world?
if the standard deviation for a population as estimated from a sample is s 5.6 then the standard error for a sample
Given that Americans of Mexican ancestry constitute 79.1 % of the populations of those eligible for jury duty and given that Partida was convicted by a jury of 12 people with only 58% (7 jurors) of them that were Americans of Mexican ancestry, can..
Test the significance of a correlation coefficient. Explain the coefficients used in regression analysis. Use regression analysis to analyze a time series
describe some of the issues or concerns at least three which would be addressed in deciding how to perform a
A professor asked her sophomore students, "How many drinks do you typically have per session? (A drink is defined as one 12oz beer, one 4oz glass of wine, or one 1oz shot of liquor.)"
The histogram shows amount of oil produced (in gallons) from an acre of land in the United States from 36 different crops.- Which summary statistics would you choose to summarize the center and spread in these data? Why?
A single-sample acceptance attributes sampling plan is required to have a producer's risk of 0.06 for an acceptable quality level of 0.5% nonconforming, and a consumer's risk of 0.10 for a rejectable quality level of 5% nonconforming. Use Minitab ..
Construct a control chart for the proportion of dissatisfied customers. Revise the control limits, assuming special causes for points outside the control limits.
What is the approximate percentage of scores that were between 380 and 580?- What is the approximate percentage of scores that were above 680?
Suppose that the cars at the plant are checked one by one, and let X be the number of cars checked until the first defective car is found. What type of probability distribution does X have?
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