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A box contains 10 blue and 5 red markers. Find the probability of obtaining at least two red markers if four markers are randomly selected without replacement. [Hint: Consider the compliment event.]
What are examples of variables that follow a binomial probability distribution? What are examples of variables that follow a Poisson distribution? When might you use a geometric probability?
Test the claim that the mean age of people in the United States who would say yes to the survey question shown in the table is 60 years or older.
the manager of a department store wants to determine what proportion of people who enter the store use the stores
a job only hires applicants who score 2 standard deviations or more above the mean on a skills test. if the mean is 77
the cost of parking is 9 per day. suppose that if you were to park illegally the probability of getting a ticket is
from the following list single out those measurements for which the square root of a typical measurement is a proper
Calculate the standard deviation of the number of available rooms in that sample. Construct a frequency distribution of the sample mean, and plot a histogram of this distribution.
In a random sample of 16 mountain climbers who are going to attempt Mt. McKinley, what is the probability of each of the following? No more than 12 reach the summit.
questionthe following data represents the car tyres life time in days for three different companies in indiacompany
Does the evidence suggest that postpartum women do not get enough sleep? Use =0.05 level of significance. How is the problem set up using the classical and P-value approach?
From this group of 2000 accounts what is the probability that an account has a balance of $500 or more, given that it is 3 or more years old?
A raffle offers a first prize of $1000 2 second prizes of $300 and 20 third prizes of $10 each. If 15000 tickets are sold at 75 cents each, find the expected winnings (IN CENTS) for a person buying one ticket?
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