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There are 878 students at penn state's college of medicine in Hershey, PA. Of those 878 students, 408 are Pennsylvania residents. Thus, 46.5% of all Penn State college of Medicine students are Pennsylvania residents. This value 46.5% is a poplulation parameter or a sample statistic?
Heights were measured for a random sample of 20 plants grown while being treated with a particular nutrient. The sample mean and sample standard deviation of those height measurements were 39 centimeters and 12 centimeters, respectively.
Construct a 98% confidence interval for the population mean and interpret the result (round margin of error E to the nearest dollar).
games are built around random number generators. given any circumstance there is always a defined set of possible
An article in Psychology and Marketing describes four variables that have been found to impact the effectiveness of commercials for high-performance auto- mobiles:
suppose a baseball player had 205 hits in a season. in the given probability distribution the random variable x
Let z represent the standard normal variable and suppose a value is randomly selected. Find each of the following probabilities by:
Use this information to construct a probability table, and then calculate each of the following probabilities:
The following are zinc concentrations (in mg/ml) in the blood for two groups of rats. Group A received a dietary supplement of calcium, and group B did not. Researchers are interested in variations in zinc level as a side effect of dietary supple..
a store wishes to predict net profit as a function of sales for the next year. the following table gives the years 1998
State appropriate null and alternative hypotheses. Report the test statistic, its degrees of freedom, and the P-value. What do you conclude?
A large industrial firm allows a discount on any invoice that is paid within 30 days. Of all invoices, 10% receive the discount. In a company audit, 15 invoices are sampled at random. The mean (average) value of the number of the 15 sampled invoic..
Use either Linear Programming module or Transportation module of Cd to minimize the shipping costs involved in move.
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