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"Imagine you are in a game show. There are 20 prizes hidden on a game board with 100 spaces. One prize is worth $50, nine are worth $20, an another ten are worth $10. You have to pay $5 tothe host if your choice is not correct. Let the random variable x be the money you get or lose. Complete the probability distribution.
X : $5, $10, $20, $50. P(x) is?
What is your expected winning or loss in this game?
does familiarity with neighbors lead to lower crime rates? a researcher has theorized that if neighbors know each other
over half of all american teens ages 12 to 17 years have an online profile mainly on facebook. a random sample of 491
Suppose a computer chip manufacturer rejects 2% of the chips produced because they fail presale testing.
i) Use the CLT to construct a con?dence interval for m with approximate con?dence coef?cient 1 - a; ii) What does this interval become if n = 100, s = 1 and a = 0.05? iii) Refer to part (i) and determine n so that the length of the con?dence interval..
The booked passengers actually arrive for the flight. Estimate the probability that if the company books 278 persons. not enough seats will be available.
Workers in 2 different mine groups were asked what they considered to be the most important labour-management problem. In Group A,
A distributor has just received a shipment of 90 drain pipes from a major manufacturer of such pipes. The distributor wishes to select a sample of size 5.
If the life of wild pheasants follows a normal distribution with a mean of 9 months and a variance of 9, what percent of the population will be less than 11 months of age?
Suppose that you want to test whether the population proportion of attorneys who make at least $400,000 per year differs from 0.24.
each individual letter of the word tennessee is placed on a piece of paper and all 9 pieces of paper are placed in a
the height of the water level in mineral water bottles has a mean of 140 mm and a standard deviation of 4 mm. assume
Conduct a test to determine if the mean heat rate of gas turbines augmented with high pressure inlet fogging exceeds 10,000 kJ/kWh. Use α = .05.
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