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If the sides of the square are lengthened by 5cm, the area becomes 144cm^2. Find the length of a side of the original square.
A normal distribution has a mean of µ = 100 with σ = 20. If one score is randomly selected from this distribution, what is the probability that the score will have a value between X = 90 and X = 120?
The amount of corn chips dispensed into a 10 ounce bag by the dispensing machine has been identified at possessing a normal distribution with a mean of 10.5 ounces and a standard deviation of .2 ounces.
Construct a grouped frequency distribution using six classes.
Determine percent of the garages take between 29 hours and 34 hours to erect? Determine percent of garages take 28.7 hours or less to erect?
What is the probability that a roulette ball will come to rest on an even number other than 0 and 00?
You have a graph with a regression line that is positively sloped. The regression line starts with observation points tightly packed around the regression line but as you move across the x-axis the observations tend to get further and further away..
What is the underlying difference between the T-test and the Z-test? Provide an example of nominal information and write a work related survey question that would collect nominal data:
The random variable "x" is the number of times he wins in 20 attempts at the game. Find the mean and std dev. for this experiment.
Assuming that the goal of 4% undersized tomatoes is reached, what is the probability of getting no more than 1 undersized tomato in a randomly selected sample of 20 tomatoes?
A random sample of 180 full-grown lobsters had a mean weight of 16 ounces and a standard deviation of 3.0 ounces. Construct a 98 percent confidence interval for the population mean.
You have been given a report that presents two regression models with different numbers of independent variables. You do not have the data so you cannot re computed regression models. Nevertheless, you have been asked to find out which model is b..
Propose a two sample z-test of a population mean and identify it as either an independent test or a dependent test.
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