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When 325 college students are randomy selected and surveyed, its found that 117 own cars. Construct a 99% confidence interval estimate of the true proportion of all college students who own cars.
Find out the probability that temperature of oven will range from 460 to 470 F?
Stem Cell Survey - Adults were randomly selected for a Newsweek poll. They were asked if they "favor or oppose using federal tax dollars to fund medical research using stem cells obtained from human embryos.
Find a 95% confidence interval for the population mean selling price of all homes in this neighborhood.
Media Matrix and Jupiter Communications gathered data on the time adults and the time teens spend online during a month (USA Today, September 14, 2000).
If you suppose returns follow normal distribution, which investment would give better chance of getting at least a $40MIL return and describe why.
The following study was developed by Economist Simon Fass. Fass surveyed a sample population of low-income households in St. Martin. The variables analyzed were monthly income per adult and choice of rental contract for housing.
The probability that a patient recovers from a disease is 63%. What is the probability that:
A real estate builder wishes to determine how house size (house) is influenced by family income (income), family size (Size) and education of the head of household (School).
multiple choice question based on multiple regression.in a regression model involving 30 observations the following
Using a level of significance of .10, is there evidence that the population mean weight of the candy bars is greater than 7.3? Explain.
This linear regression model was fitted to a sample of size 50 to produce the following regression equation: yhat = 145 + 1.2x1 + 300x2.
What additional strategies (up to 3) you would propose that may increase validity of the findings.
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