Reference no: EM13102669
1. On average, 40% of U.S. beer drinkers order light beer.
a. What is the probability that none of the next eight customers who order beer will order light beer?
b. What is the probability that one customer will?
c. What is the probability that two customers will?
d. What is the probability that fewer than three will?
e. Construct the probability distribution (using Excel or the appropriate Appendix), make a graph of its PDF, and describe its shape.
2. Candidates for employment at a city fire department are required to take a written aptitude test. Scores on this test are normally distributed with a mean of 260 and a standard deviation of 51. A random sample of nine test scores was taken.
a. What are the mean and standard error for this sample?
b. What is the probability that the sample mean score is less than 250?
c. What is the probability that the sample mean score is more than 230?
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What is the speed of the helium atoms in the tank
: A 18 liter tank of helium is at a pressure of 192 kPa at a temperature of 0 C. A.) How many moles of helium are there in the tank? B.) If the volume of the tank expands to twice its initial volume at constant pressure, what is the new temperature?..
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Body types and probability
: A study on body types gave the following results: 45% were short; 25% were short and overweight; and 24% were tall and not overweight.
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Determine what is hog
: The liquid rate used is twice the minimum, the equilibrium relationship can be represented as yA=9.95 xA then determine what is HOG, operating line relationship, NOG and packed height of the column?
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Can the equations above be used in a situation
: Consider the following equations of motion. v = v0 + at ?x = v0t + (1/2) at^2 v2 = v02 + 2a?x (a) Can the equations above be used in a situation where the acceleration varies with time? (b) Can they be used when the acceleration is zero?
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Probability distribution-mean and standard deviation
: What is the probability that none of the next eight customers who order beer will order light beer? What is the probability that one customer will? What is the probability that two customers will?
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What is the diameter of a copper sphere
: What is the diameter of a copper sphere that has the same mass as a 2.00 cm x 2.00cm x 2.00 cm cube of aluminum?
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Test a one-tail hypothesis
: Suppose you wish to test a one-tail hypothesis where you reject H0 only in the lower tail. You calculate ZSTAT = 1.38. What is the statistical decision if you test the null hypothesis at the 0.01 level of significance?
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What is electric flux through one surface of icosahedron
: An object with a charge of 0.880 µC is placed at the center of a regular icosahedron with 20 equivalent surfaces. What is the electric flux through one surface of the icosahedron?
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Binomial probability of questionnaires
: The president of an agency specializing in public opinion surveys claims that approximately 70% of all people to whom the agency sends questionnaires responds by filling out an returning the questionnaire.
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