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Using the sample variance from the data of your own survey to estimate the population variance, specify a desired precision and calculate the sample size necessary to achieve it with 95% confidence in a future survey of the same population.
Assume that the person holding the hand is asked to "Name an ace in your hand" and answers "The ace of hearts." What is the probability that he has a second ace?
suppose test scores for a test are uniformly distributed between 51 and 95. let xtest scores. what is the probability a
Now let Yn be the maximum value when n dice are rolled. Find the distribution of Yn. Is this distribution bell-shaped for large values of n
use a table of cumulative areas under the normal curve to find the z-score that corresponds to the given cumulative
question consider rolling a pair of fair dice.a what is the probability that the number of dots on the upward side of
The first unit produced after the calibration effort to be found to be defective. What is the probability that machine is in adjustment?
Which of the following statements is not true of the null hypothesis? A) It is your theory B) It is what you would expect by chance alone C) Assumes things to be equal D) None of the above
a radio transmission tower is designed for a 50 year wind. this means that is there is a certain high wind velocity
suppose there are 10 drawers each containing two coins. drawers 1 and 2 contain only gold coins while in drawers 34 and
A researcher is interested in knowing if there are differences between the incidence of accidents among male and female pilots. They were able to collect 62 responses from a random number of pilots. Among them, 17 male pilots were in accidents, 26 we..
Estimate the IQR of the tires tread life - If the dealer is only willing to give a refund to no more 2% of the customers, for what mileage can he guarantee these tires to last?
One of the top-selling video games continues to be Madden NFL 09 published by Electronic Arts. While prices vary widely depending on store, the suggested retail price for this video game is $46. The file entitled Madden contains a random sample of ..
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