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A survey finds that 55 people out of 170 favor increasing property taxes to help pay for a new library. If this data is used to estimate the population proportion who favor new taxes, the standard error of the estimate is:
A. 0.425
B. 0.036
C. 0.324
D. 0.001
E. 0.119
the length of time in seconds that a user views a page on a web site before moving to another page is a lognormal
Determine the mean, median and mode of those data. Make sure you show your hand computeed work. Is there any indication from this group of data that the new policy holder may lean toward younger ages?
Develop three regression models to predict the selling price based upon each of the other factors individually. Which of these is best?
A random sample of doctors was taken suppose the test statistic is z= -1.95. can we conclude that h0 should be rejected at the 1) a=.10 b) a=0.05 c) a= 0.01 level?
Assume that demand for the upcoming weekend is normally distributed with a standard deviation of 30. What is the probability all the hotel's rooms will be rented?
Construct a pie chart of relative frequencies and construct a bar graph of the relative frequencies
an insulated 8-m3 rigid tank contains air at 600 kpa and 400 k. a valve connected to the tank is now opened and air is
Consider the trash bag problem. Suppose that an independent laboratory has tested trash bags and has found that no 30-gallon bags that are currently on the market have a mean breaking strength of 50 pounds or more.
Find a 90 percent confidence interval estimate of the population mean and what is the 95 percent confidence interval estimate of the population mean.
Cars arrive at a toll booth at a mean rate of five cars every 10 minutes according to a Poisson process. Find the probability that the toll collector will have to wait longer than 26.30 minutes before collecting the eighth toll.
A survey is planned to determine the mean annual family medical expenses of employees of a large company. The management of the company wishes to be 95% confident that the sample mean is correct to within plus-or-minus $50 of the population mean.
suppose that we want to estimate the proportion of recipes in the better homes and gardens new cook book that do not
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