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1) A poll states that 30% of the workers in a large company have new desks. If 6 workers are selected at random, what is the probability that at least one worker has a new desk?
2) In a shipment of 20 televisions, 5 are defective. If 2 television sets are randomly selected and tested without replacement, what is the probability that both are defective?
The average amount of time between a score by either team in college soccer games is 15.2 minutes.
a coin and a die are tossed 10 times. what are the probabilities of the following outcomes?a getting exactly 4 heads
chi-squared a study is designed to investigate whether there is a difference in response to various treatments in
A person rolls a pair of six-sided dice, which are equally likely to come up any number from 1 to 6. If the person rolls a seven he gets $0.
A woman has a collection of snakes and iguanas. Her young son observed that the reptiles have a total of 50 eyes and 56 feet. How many reptiles of each type does the woman have?
question consider the hypothesis test given byho mu 670ho munbspne 670 in a random sample of 70 subjects the sample
A 1990 census report revealed that the mean distance that U. S. citizens live from their birthplace is 50 miles and that the standard deviation is 15 miles. A random sample of 49 residents of your city yielded a mean distance of 56 miles.
it is generally believed that electrical problems affect about 14 of new cars. an automobile mechanic conducts
consider the following experiment a ball is drawn without replacement from an urn containing two red and three blue
If the population standard deviation is s = 10, is the sample sufficient to demonstrate a significant effect? Again, assume a two-tailed test with a = 0.05.
A professor is targeting a score of 80 on an exam. His forty-nine students averaged 78 on an exam with s = 7. Are the scores significantly less than 80 at a significance level of 0.05?
a government agency has specialists who analyze the frequencies of letters of the alphabet in an attempt to decipher
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