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Major league baseball salaries averaged $3.26 million with a standard deviation of $1.2 million in 2009. Suppose a sample of 100 major league players was taken. What was the standard error for the sample mean salary?
Lab technicians at a major mdical lab can process an average of 400 blood samples a day with a standard deviation of 50 samples. The processing follows a normal distribution.
A sample of 46 bars is taken and their mean length is determined to be 51 centimeters with a standard deviation of 3.6 centimeters. Using a .01 significance level, test the retailers claim that the population mean is less than 50 centimeters.
3 voters are randomly selected (with replacement) from a group of 1,500 people. The group is known to be 20% republican. What is the probability that all of them are republicans?
Using the below information in a linear programing problem maximize the profit for product A and B. Provide how many of each product should be produced and what is the profit at that level?
Students are the University of New Harmony received 10, 000 course grades last semester. The table below breaks down these grades by which school of the university taught the course.
The rest have no opinion. " Suppose that a a sample of 100 American adults is quizzed on the subject. What is the probability of the following events?
A researcher wants to estimate the average time (in minutes) spent in a car daily. This will be done by randomly surveying 300 individuals and calculating the sample mean.
In which of the following situations is bootstrapping (and other resampling methods) often used and Which of the following is a valid description of the bootstrapping method.
Mean score on 10 item test for all students enrolled in a Traditional course was 9.64. A random sample of 41 students in Project Course is given same test
Assumed that the standard deviation of the difference in the mean number of drinks is 6.7 drinks.
What is the 95% confidence interval for the difference between the mean prices of the two models?
Which of the variables below do you think will be roughly normally distributed? Please select all that apply.
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