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A survey of a group of college students was done to find out how students get to school for the school year. 15% of those surveyed were from out of state. Of those that were in-state, 56% used a car as their primary form of transport to school, 13% used a train and 18% used a bus. Of those that were from out of state, 29% used an airplane, 31% used a car, and 12% used the train.
1) What is the probability that a respondent uses the train?
2) What is the probability a randomly chosen respondent is from out of state and uses the bus as his primary transport?
3) What is the probability that a respondent is from in state, takes an airplane or both?
a random sample of size n is to be drawn from a population with mean 700 and standard deviation 300. what size sample
1. Find the probability that a number greater than or equal to 4 appears on the up face in a single toss of a fair die.
In May 1998, the New York Times carried an article by Adam Bryant describing a research project to relate two rather diverse phenomena: the performance of a Fortune 500 company, and the golf game of its CEO. Before we go further, you should read this..
Construct a 90 percent confidence interval for the proportion of all depositors who ask for cash back. (Round your answers to 4 decimal places.)
Business and Management Many farmers craft unique corn mazes in their fields after the growing season. These huge puzzles challenge both children and adults.
Based on this sample information find out what percent of variation in starting salaries is described by GPA, and find out the equation that would forecast salary from GPA. Give a scatter plot.
The data are number of trials to learn to go left at the first turn in a maze for each of their 20 rats. Answer each of the four questions and don't forget to include a verbal statement of your interpretation of the outcomes.
If the player enters one lottery each week, what is the expected number of weeks until a player matches all 6 numbers in the state's sample?
(a) Calculate the probability that a five-year-old device will have exactly two failures over the next 10 years.
Q6: A global financial institution transfers a large data file every evening from offices around the world to its headquarters. The time required to process the file is normally distributed with mean of 1.5 hours and standard deviation of 15 minutes.
Overall standard deviation versus the pooled standard deviation. The last line of the summary tabe given in Exercise gives the mean and the standard deviation.
One characteristic of billiard balls is their elasticity - the bounce they get when striking one another. A manufacturer of billiard balls is testing three additives to the basic plastic.
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