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Students are asked to type two hundred and fifty words essey without using spell checking. The number of misspelled words, which is represented as the random variable X, has the following probability distribution:
Value of X: 0 1 2 3 4
Probability: 0.1 0.2 0.3 0.3 0.1
a. write the event "at least 2 misspelled words" in terms of random variable X. What is the probability of this event?
b. Calculate the expected value and the variance of X
q1. a furniture store expects to sell 640 sofas at a steady rate next year. the manager of the store plans to order
Education and Child Development Students at Stetson University plan to ask administrators to build more on-campus housing on the DeLand campus.
What are the proportions of individuals who reduced spending in each gender?- What is the odds ratio for comparing female individuals to male individuals?
the heights and weights of 11 men between the ages of 21 and 26 were measured. the data are presented in the table
Nine percent of men and 0.25% of women cannot distinguish between the colors red and green. This is the type of color blindness that causes problems.
suppose x is a positive random variable with ex5.3 and standard deviation of x is 1.6 . finda e3-2xb varxc ex2d ex-22e
A height sample of 50 people from this office has a mean of 185 cm. Which number is m and which is x?
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a sample of 40 cds from a students collection showed a mean length of 52.74 minutes with a standard deviation of 13.21
Suppose the probability of an IRS audit is 1.9 percent for U.S. taxpayers who file form 1040 and who earned $100,000 or more.
Convert them into valid standard-form syllogisms.- If the Defense Department is so intent on fighting alcohol abuse, why does it make alcohol so readily available and acceptable?
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