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Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 15.
Find the probability that a randomly selected adult had an IQ greater than 120.0 (the requirement for membership in the Mensa organization). Round to the nearest thousandth.
Also what is the probability that a random person will have an IQ between 100.0 and 120.0?
What would be the 95th percentile IQ scores?
What is the probability that a mean IQ score for a random sample of 40 people will exceed 104.0?
the estimated cost for a national poll is 10 per person interviewed. a project has a budget of 15000 for the poll. the
question suppose that a volcano is erupting and readings of the rate rt at which solid materials are spewed into the
A sample of 50 bottles reveals a mean weight of 502.1 ml. Construct and interpret a 90% confidence interval for the mean. Be sure to interpret the meaning of this interval.
let x have the cumulative distribution function fx 1-e-x-1 x gt -1. find micro of x by using the mgf of
Paired samples t-test for the given data - financial advice from the voluntary organization - A local voluntary organization affiliated to the Citizens Advice Bureau offers free financial advice to residents in the area who are registered debtors
What is the relationship between the variance and the standard deviation?
two people are going from seattle to portland. alice has 50 chance of arriving at 500 and a 50 chance of arriving at
a student randomly guesses at 20 multiple choice questions. each question has four possible answers with only one being
A player of a video game is confronted with a series of opponents and has an 80% probability of defeating each one. Success with any opponent is independent of previous encounters. The player continues to confront opponents until defeated.
A recent article in the Wall Street Journal reported that the 30-year mortgage rate is now less than 6 percent. A sample of eight small banks in the Midwest revealed the following 30- year rates (in percent):
based on interviews with 81 sars patients researchers found that the mean incubation period was 4.6 days with a
Recognizing that the hike to the campsite is a long one, a limit of 35 pounds has been set as the maximum total weight of the items to be carried. Formulate this as a LP problem to maximize the total utility of items carried.
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