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A mandatory competency test for high school students has a normal distribution with a mean of 400 and a standard deviation of 100. scores are whole values. The top 3% receive $500.00. what is the minimum score you would need to receive this award?
In a test of the independence of two variables, one of the variables has two possible categories and the other has three possible categories.
A random sample of 5 parks is selected and the number of acres is shown at alpha= 0.05, find the critical value. 944, 1036, 790, 5842,566
Also use the regression model to predict a student's average if he/she misses 4 classes.
The mean weight for a certain type of fish is known to be 28.0 ounces with a standard deviation of 2.5 ounces . A game warden catches and weighs 30 fish from a certqin pond to check if they are larger than the mean stated above.
From Company B, 850 stereos are purchased and 6% are found to be defective. Given that a stereo is defective, find the probability that it came from Company A.
In recent year, of the 109,857 arrest fro federal offenses, 29.1% were for drug offenses. Use a .01 significance level to test the claim that the drug offense rate is equal to 30%.
Which component of a time series is most likely to occur? Which component has a pattern that must be complete in a single year and repeat from year to year?
The Minneapolis Tribune ran an article on gender differences in shopping behavior. When 400 women were asked to respond to the question "Where I shop is influenced by which store has a greater variety," 60% answered "Yes.
In the context of this scenario, what would be the consequences of making a Type I error?
Find the percentage of the 1000 enemy that will be destroyed.
It would like to be within plus or minus $55 of the true mean with a 95% confidence level. The standard deviation is thought to be $700. How many card holders should be sampled?
For a sample of 120 students selected at random, what is the mean and variance of the number of students who watch this game?
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