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If 31% of all students entering a certain university drop out during or at the end of their first year, what is the probability that more than 585 of this year's entering class of 1807 will drop out during or at the end of their first year? (Give your answer correct to four decimal places.)
While in July the mean high temperature is 74oF and the standard deviation is 8oF. In which month is it more unusual to have a day with a high temperature of 55oF?
Given that SAT test scores are normally distributed with a mean of 1000 and a standard deviation of 200, what is the lowest possible score a student needs to qualify for acceptance into the university?
Compute the five number System for this data set and list Xmin,Q1,Q2,Q3 & Xmax. See Videos and show how the pointer was computed for each quartile. (15%)
Set up probability distribution by illustrating all x values and their associated probabilities. List sample space of tossing a fair coin.
In a group of 6 computer programmers, what is the probability that none are introverts? What is the probability that 4 or more are introverts?
A simple random sample of 36 bulbs yields a mean lifetime of 504 hours. Construct and interpret a 99% confidence interval for the mean lifetime of all such bulbs.
Sample data in a goodness-of-fit test are compared with __________. A. a predetermined or historical standard for the variable being studied
What is the expected number of ticket holders that will fail to show for the flight? What is the probability that the airline will not have enough seats for all the ticket holders who show for the flight?
Standard deviation of 1.8 years, and the distribution is approximately normal. if an employee is picked at random, what is the probability that the employee has worked at the store for over 10 years?
Describe meaning of alternatives, criteria and states of nature. Explain how are they utilized in decision analysis?
If x is a binomial random variable where n=100 and p=.1, find the probability that x is less than or equal to 11 using the normal approximation to the binomial.
Shows a sample mean of 1,261 with a standard deviation of 59. Should Pennsylvania adopt the new system for all toll roads in the state?
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