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Question: Laparoscopic surgery is a procedure for threading a small flexible tube within a patient's body to explore or perform procedures. A recent study was conducted to see what skills a medical student new to laparoscopic surgery might have that would predict shorter learning times. One variable that was gathered was the amount of time a student had spent playing video games before starting his laparoscopic training. The researcher wants to see if the time spent gaming can predict the time needed to perfect laparoscopic skills. What would be the correct test to apply?
A woman has a collection of snakes and iguanas. Her young son observed that the reptiles have a total of 50 eyes and 56 feet. How many reptiles of each type does the woman have?
Dr Johnson wants to know if there is sufficient evidence to conclude that the grade distribution of his class is different than the historical grade distribution. Use a =.05 and .01 and perform a goodness of fit test.
What do confidence intervals represent? What is the most controllable method of increasing the precision of or narrowing the confidence interval? What percentage of times will the mean, or population proportion, not be found within the confidence ..
q1 can you describe a data set for which one would one would prefer to use the median rather than the mean?q2 can you
The sample resulted in a mean trading volume of > = 39.48. Assuming a population standard deviation of 15.07, compute the margin of error for a 95% confidence interval for mu.
q1. mimi was the 5th seed in 2012 umuc tennis open that took place in august. in this tournament she won 83 of her 100
the weights in kilograms of a group of crates being shipped to panama are 95 103 110 104 105 112 and 92. what is the
the manager of fyz incorporated has been presented with the following lp modelminimize z 30a 45b costsubject to5a 2b
in a group of 135 high school students 57 went to college. more precisely 30 of those who went to college were women
Answer the following three questions based on what you know about statistics now.
What is the average monthly amount charge? What percent of monthly charges are between $600 and $ $889 What percent of monthly charges is less than $100.
A random sample of 100 computers showed a mean of 115 gigabytes used with a standard deviation of 20 gigabytes. What is the standard error of the mean?
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