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Anita's, a fast-food chain specializing in hot dogs and garlic fries, keeps track of the proportion of its customers who decide to eat in the restaurant
Let x be a random variable with the following probability distribution:
Suppose that a certain college class contains 59 students. Of these, 35 are seniors, 30 are business majors, and 12 are neither
At a certain college, 51% of the students are female and 17% of the students major in civil engineering. Furthermore, 10% of the students both are female
Consider the xbar chart for the piston-ring example as follows, let ring diameter be normally distributed, and the sample size is n = 5.
Let B and C be two events such that P(B) = 0.50 and P(C) = 0.05.
A popular dice game, called "craps," is played in the following manner. A player starts by rolling two dice. If the result is a 7 or 11, the player wins.
Suppose that the genders of the three children of a certain family are soon to be revealed. Outcomes are thus triples of "girls" ( g) and "boys" (b )
We know the IQ of people is normally distributed with mean 120 and standard deviation (SD) of 25. Calculate the probability that an adult will have
Out of 11 people applying for an assembly job, 3 cannot do the work. Suppose two persons will be hired.
Acording to a recent survey, 70% of all customers will return to the same grocery store. Suppose 10 customers are selected at random, What is the probability:
Access time to a supercomputer mainframe is normally distributed with an average(mean) of 92 minutes a day with standard deviation of 11 minutes
At Acme Inc., women employees are three times as likely to take advantage of computer training courses as men employees
The cell phone industry is growing at a rapid pace. Current estimates suggest that 60% of people have cell phones
For a randomly selected student in a particular high school, let Y denote the number of living grandparents of the student
The length of time it takes to find a parking spot at the mall follows a normal distribution with a mean of 5 minutes and a standard deviation of 2 minutes.
Insurance probability tables, as the one on the attachment, tabulates the average # of American males per 100,000 who will die during various age intervals.
Gas Station pump signs, at one chain, encourage customers to have their oil checked, claiming that one out of every four cars should have its oil topped.
If the probability that an individual suffers a bad reaction from injection of a given serum is 0.001, determine the probability that out of 2000 individuals;
Replacement time for tv sets normally distributed with a mean of 8.2 years and a stan. dev. of 1.1 years. a) Find probability that a randomly selected set
The manager of a toy store has to decide how many toys to stock for the Christmas season. Each toy cost the store $5 and is sold for $10.
A group of 30 people gather in a room. What is the probability that at least 2 of these people have the same birthday? The year of birth is not considered
In a recent poll of married couples, about 79 percent of the men and 55 percent of the women were employed outside the home
Construct a table giving the binomial distribution for each of the following:
Find the value of C that makes f(y) a probability density function, then find E(Y)