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Here's the q': In a recent survey amongst college students, it was found that 40% were graduates of public schools. The survey revealed that 20% of college students are maintaining a GPA of at least 2.5. A student is selected at random and found to have a GPA of less than 2.5, what is the probability that the student is from a private school?
To test whether there is a significant mean difference among the three.
The gambler is paid later as follows, depending on the number of winners he picked. What is his expected gain? Remember, a loss is a negative gain, and that the bookie keeps the gambler's $20.
Create a frequency table for the total number of people that prefer each type of music:
The length of time for one individual to be served at a cafeteria is a random variable having a lognormal distribution with a mean of 10 minutes and standard deviation of 2 minutes.
Over the past 50 years, the number of hurricanes that have been reported are as follows: 9 times there were 7 hurricanes, 14 times there were 8 hurricanes, 19 times there were 11 hurricanes, and in the remaining years there were 14 hurricanes. Wha..
A study reported in "Inside Higher Education News" (May, 2006) found that financial incentives can improve low-income college students' grades and retention.
If you randomly select ten m&m's, what is the probability that exactly three of them are green?
Construct a sample space using a tree diagram - Which of the following three sets of probabilities are inappropriate because they violate a basic rule of probability
Based upon all of this information, do a "goodness-of-fit" test to see if the distributions are the same as they were two years ago. Use a level of confidence of .01. Should we accept Ho or reject Ho?
ABC Manufacturing has six machines that perform particular task. Breakdowns happens frequently for this machine. Past records indicate that the number of breakdowns that happen each day is described by the probability distribution seen below:
Create a 90% confidence interval for mean score on this placement exam for all students.
A powerful women's group has claimed that men and women differ in attitudes about sexual discrimination. A group of 50 men (group 1) and 40 women (group 2) were asked if they thought sexual discrimination is a problem in the United States.
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