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City records indicate that the average age of the houses on the west side of town is 43 years, with standard deviation 23 years. These records also indicate that 30% of west-side houses are made of brick. A construction company plans to send an advertising brochure to 196 randomly selected west-side houses.
Use a normal curve to estimate the probability that the average age of the houses receiving the brochure is greater than 45 years.
Run a chi square goodness of fit using Type of Purchasing (PurType) as the variable with all categories equal and report the observed and expected values and the tests of statistical significance.
A small pilot study is being conducted to determine the association between maternal age and birth weight. First, from all the single births in 2009 at Hospital X with mothers aged ? 20 years, we randomly selected 15 records.
Suppose we wish to test the hypothesis H0: = µ2 vs. H1: = µ≠2 We find a two sided p-value of .03 and a 95% CI for µ of (1.5, 4.0) Are these two results possibly compatible? Why or why not?
Find the probability that the driver was intoxicated or the pedestrian was not intoxicated?
What events occurred in these months that may have caused such an extreme performance in the stock's return and describe and analyze the monthly returns using Stata's statistical and graphics capabilities.
If circuit switching is utilized, how many user can this access link support?
every day for 100 days 72 samples were taken of fuses rated at 6a and measures the current that they burn out. a
The ground floor of the campus building, what is the probability that at least 3 students selected are undergraduate students?
A sample of farms is $1200, with a standard deviation of $350. Assume the data set has a bell-shaped distribution. Between what two values do about 95% of the data lie?
the global fisherypacks shrimps that weigh more than 1.91 ounces each in packages marked largeand the shrimp that
A television station estimates that 45% of college students watch the Super Bowl. For a sample of 240 students selected at random, what is the mean and variance of the number of students who watch this game?
A previously used drug treatment has a mean remission time of 12.5 weeks. Does the data indicate that the mean remission time using the new drug is different from 12.5 week at a level of significance of 0.01?
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