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What would it mean if a difference were statistically significant and the effect size were not meaningful?
the heights of 18-year-old men are normally distributed with a mean of 68 inches and a standard deviation of 3 inches.
Assume that a simple random sample has been selected from a normally distributed population. Find the test statistic, P-value, critical value(s), and state the final conclusion.
The diameters of oranges in a certain orchard are normally distributed with a mean of 5.26 inches and a standard deviation of 0.500 inches.
For each kind of queueing system listed in Prob. 17.3-1, briefly describe the nature of the cost of service and the cost of waiting that would need to be considered in designing the system.
Use the minimum probability of error criterion. Assume that vet) is zero mean white Gaussian with spectral density No 12.
the following data represent the responses y for yes and n for no from a sample of 40 college students to the question
Construct a 95% confidence interval for the population mean, based on the numbers 1, 2, 3, 4, 5, 6, and 20. Change the number 20 to 7 and recalculate.
Suppose that the probability distribution of a random variable x can be described by the formula. Calculate the variance and standard deviation.
Explain how the expected frequencies for cells of a contingency table are calculated in a test of independence or homogeneity.
Suppose the time spent by a randomly selected student who uses a terminal connected to a local time-sharing mini-frame computer facility. What are the values of alpha and beta?
A brand name has a 60% recognition rate. Assume the owner of the brand wants to verify that rate by beginning with a small sample of 6 randomly selected consumers.
for a normal distribution find the probability that an observation falls within 0.92 standard deviations of the
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