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New York City is the most expensive city in the United States for lodging. The mean hotel room rate is $204 per night (USA Today, April 30, 2012). Assume that room rates are normally distributed with a standard deviation of $55.
a. What is the probability that a hotel room costs $225 or more per night (to 4 decimals)?
b. What is the probability that a hotel room costs less than $140 per night (to 4 decimals)?
c. What is the probability that a hotel room costs between $200 and $300 per night (to 4 decimals)?
d. What is the cost of the 20% most expensive hotel rooms in New York City? Round up to the next dollar.
Of the adult books, 70 are nonfiction while 60 of children's books are nonfiction. If the book is selected at random, determine the probability that is is?
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Find the indicated probability using the geometric or Poisson distribution. A newspaper finds that the mean number of typographical errors per page is nine.
Mean daily amount of her tips was $24.85, with a standard deviation of $3.24. Can Ms. Brigden be 99% confident that she is earning an average of $20 or more per day in tips?
an mp3 player is loaded with 60 musical selections 24 rock tunes 21 jazz tunes and 15 blues tunes. the player is set on
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according to the irs the average tax refund for the 70 million personal income tax returns in 1998 was 800. assuming a
Standard deviation of 0.04135 (4.135%). Treating the next 12 months as a random sample, what is the probability that the mean rate of return will be positive?
Age effects in medical care. The type of medical care a patient receives may vary with the age of the patient. A large study of women who had a breast lump investigated whether or not each woman received a mammogram and a biopsy when the lump was ..
A random sample of 15 Golden Retrievers has an average weight of 66 lb. The percentile rank of this sample is: A.85. B.10. C.90. D.80. E.93.
if tow televisions are randomly selected, compute the probability that both televisions work. what is the probability that at least one does not work?
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