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A large tank of fish from a hatchery is being delivered to a lake. The hatchery claims that the mean length of fish in the tank is 15 inches, and the standard deviation is 7 inches. A random sample of 58 fish is taken from the tank. Let x be the mean sample length of these fish. What is the probability that x is within 0.5 inch of the claimed population mean? (Round your answer to four decimal places.)
Find out the coefficient of determination, r 2 , and interpret its meaning.
Compute the probability that student eats at fast food restaurant 2 or more times per week?
Multiple choice question using Forecasting techniques. Which among of the following models are best suited to forecast a time series with a stable seasonality component.
Process data by Excel using its two-way ANOVA without replication program.
A teacher gave a 25 question multiple choice test. After scoring the tests, she computed a mean and standard deviation of the scores. The standard deviation was 0. Based on this information
Using the menu systems, request descriptive statistics (mean, s.d. and variance) for both your original variables
Which of the following would be most helpful in assessing the practical significance of a test of hypotheses about a proportion?
Which of the given experiments can be modelled by Poisson distribution?
Should Martha use an independent-samples t-test or a related samples t-test? Explain your answer.
Create the indicated confidence interval for population mean µ using a t- distribution.
The null hypothesis is that there was no change in average liquor consumption. State this formally in terms of µ.
Assume you choose 20 houses at random. On average, how many houses of twenty would you expect to have DVD? Determine standard deviation of number of houses with DVD?
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