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When traveling, some motorists assume that a restaurant has good food and reasonable prices if there are a lot of trucks parked outside. What other observed characteristics of a restaurant might a traveler use in deciding whether to stop and eat?
When water taxi sank in the Baltimore Inner Harbor, an investigation revealed that the safe passenger load for water taxi was 3500 lbs. It was also noted that the mean weight of passenger was assumed to be 140 lbs.
Derive the functional form of the least-squares estimator of the proportionality factor, /3. Is the Use the estimator you derived in (b) to generate an estimate of /3.
Here are the annual numbers of deaths from tornadoes in the United States from 1990 through 2000.- Find these statistics by hand (no calculator!):- mean- median and quartiles.
Suppose 100,000 blood samples contain 10% that are HIV-positive. All are tested with ELISA. Set up a two-way table to show what the outcomes of the tests are expected to look like. What proportion of the samples that test positive are really expec..
When would you use hypothesis testing and when would you use confidence intervals?
A random samle of 12 college freshmen is obtained. The probability that exactly two of the 12 freshmen will not return for their sophmore year is?
(a) Find the generating function of the number of individuals in the first two generations. (b) Suppose that the offspring distribution is geometric with parameter p. Determine the extinction probability.
Let x1, ..., xn be a random sample from an exponential distribution, X ~ EXP(theta) a) If x(bar) = 17.9 with n = 50, then find a one-sided lower 95% confidence limit for theta.
A lot consisting of 100 fuses is inspected by the following procedure: 5 fuses are selected randomly, and if all 5 "blow" at the specified amperage, the lot is accepted. Suppose that the lot contains 10 defective fuses. Find the probabily of accep..
His estimated regression equation was Crime = 428 + .050 Income. Which outcomes would be likely in a bivariate regression on 45 randomly chosen U.S. cities in 2005 with
a random sample of size 56 from a normal population showed a mean of 63 and a sum of squares of deviation from the mean
Create a document explaining the data you have decided to use and what statistical test you intend to use. Be sure to use the decision tree provided in this activity. Analyze your data to insure that it meets the assumptions of the test (for examp..
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