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Question: Three dice are rolled.
a) What is the probability that the total number of spots showing is 11 or more?
b) Find a number m such that if five dice are rolled, the probability that the total number of spots showing is m or more is the same as this probability of 11 or more spots from three dice.
Problem: 10.5% of the population is 65 or older. Find the probability that the following number of persons selected at random from 25 people are 65 or older.
Who makes more? A manufacturing company is reviewing the salaries of its full-time employees below the executive level at a large plant.
suppose that in a simple random sample of 100 people 69 of them believe the seahawks will win the superbowl this year.
a machine dispenses water into a glass. assuming that the amount of water dispensed follows a continuous uniform
In conducting a survey of adults, a pollster claims that he randomly selected 50 subjects, 3 were men. Is this statistically significant?
equation of the regression line.using the age and sick days data age x182639485358sick daysy16129562anbsp find the
Indicatethe method ofconstructing histogram, frequency polygon and ogive. Define Frequency polygon and Frequency Curve. Explain clearly the relation that exists n them.
In a weekly lottery, each $1 ticket sold adds 50 cents to the jackpot that starts at $1 million before any tickets are sold. The jackpot is announced each morning to encourage people to play. On the morning of the ith day before the drawing, the c..
As mentioned in this chapter, both the base year and the relative weights used for the Consumer Price Index are periodically updated.
Test two integrated circuits. In each test, the probability of rejecting the circuit is p. Let X be the number of rejects (either 0 or 1) in the first test and let Y be the number of rejects in the second test. Find the joint PMF PX,Y (x, y).
Using the constant a 5 0.3, ?t an exponentially smoothed curve to the original time series. Repeat part (c) using a 5 0.7. How has the new value for the constant affected the smoothness of the ?tted curve?
Determine if your survey questions are appropriate for researching your business problem, and explain why they are. Identify the level of measurement being used for each of your survey questions.
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