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Airlines overbook (sell more tickets than there are seats) flights, based on past records that indicate that approximately 5% of all passengers fail to arrive on time for their flight. Suppose a plane will hold 250 passengers, but the airline books 260 seats. What is the probability that at least one passenger will be bumped from the flight?
A confidence interval estimate for the population mean is given to be (40.45, 49.24). If the standard deviation is 11.159 and the sample size is 35, answer each of the following (show all work):
P dollars is invested at annual interest rate r for 1 year. If the interest is compounded semiannualy, then the polynomial P(1+r/2)^2 represents the value of the investment after 1 year.
Find E(X). (Note that when a bet is won, the $1 that was bet is returned to the bettor in addition to the $1, $2, or $3 that is won, but the returned dollar does not count as part of the winnings.)
The following sample data were obtained from three populations where the variances were not equal, and you wish to compare the populations.
Describe your situation and why more than one solution is possible - Write an inequality to model the situation and solve this inequality.
A candy company claims that 92% of consumers like their candies. To test this claim, 9571 people are selected at random from those who have eaten the company's candies.
Find the p-value of a two-tailed test if x (x bar) =51.8 and s =10.4. P= ___ (rd. to 4 dec. places). Find the p-value of an upper-tailed test if x (x bar) = 51.8 and s= 10.4. P= ___ (rd. to 4 dec. places)
1. let x and y be bernoulli random variables. let z x ya. show that if x and y cannot both be equal to 1 then z is
The time between arrivals of cars at the Petroco Service Station is defined by thw following probability distribution.
Develop a decision tree and/or complete payoff tables to represent the alternatives and outcomes for consideration by PIMCO.
a random dot stereogram is defined in wikipedia as a pair of images of random dots which when viewed with the aid of a
Using the 0.10 level of significance, is there evidence that the mean shopping time at the local supermarket is different from the claimed value of 22 minutes?
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