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Given a normal distribution with μ = 104 and σ = 10, and given you select a sample of n, There is a 67% chance that over-bar X is above what value?
in a second grade class containing 12 girls and 10 boys 2 students are selected at random to give out the math papers.
what is the name or notation given to a value for which 61 of the sample data is smaller and 39 of the sample data is
Use a graphical technique to compare the divorce rates in 1992, 2008 and 2012 broken down by age for Australian Male. Describe your graph.
If a set of paired data gives the indication that the regression equation is of the form μY|x = α · βx, it is customary to estimate α and β by fitting the line
Write a statement that interprets the confidence interval. Based on the preceding result, should pollsters be concerned about results from surveys conducted by telephone?
it is estimated that 56 of the children between the ages of 3 and 5 years are already enrolled in school. in a sample
What can you conclude from chebychev's theorem about the percentage of adults in the town whose heights are between 59.7 and 72.9 inches? Show all work.
suppose the coffee industry claimed that the average u.s. adult drinks 1.7 cups of coffee per day. to test this claim a
Ben conducts a study on the effects of actor gender on purchasing preferences. He shows participants a video in which either a male or female actor promotes a new XBox game. Ben then has participants (all parents) rate the game, using a scale of 1-..
The goal for Company A is to make sure more than 90% of their shipment will be accepted by their customer. In order to achieve the goal, Company A wants their customer to reduce the sample size from 300 samples. What sample size should Company A s..
Find the probability that fewer than two cars will pass in exactly two of three consecutive intervals.
Suppose the random variable x is best described by a normal distribution with µ = 24 and σ = 2.7. Find the z-score that corresponds to each of the following x values.
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