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Jinbao produces tubas and ships them in lots of twenty. Suppose that 60% of all such lots contain no defective tubas, 30% contain one defective, and 10% contain two defectives. Now suppose that a lot is inspected, with two tubas being selected from it at random, and neither is found to be defective.
a. What is the probability that there are no defectives in that lot?
b. What is the probability that there is one defective in that lot?
A sample of 25 concession stand purchases at the October 22 matinee of Bride of Chucky showed a mean purchase of $5.29 with a standard deviation of $3.02.
I tossed a coin 6 times and recorded the outcomes - H for heads and T for tails. The first set of tosses yielded HTHTTH and the second set of tosses yielded TTTHHH. Which set of tosses is more probable to happen? And why?
your local newspaper contains a large number of advertisements for unfurnished one-bedroom apartments. you choose 10 at
In this the anniversary of the sinking of the Titanic, it is interesting to look at the distribution of those who survived, and those who died. The table below describes the number of men, women and children who were passengers on the Titanic.
For following set of scores, prepare a frequency distribution, a histogram, and a stem-and-leaf display for each variable. Also calculate the mean, the median and the standard deviation of each score.
Calculate the difference in the average "clutter" between network and TV.
Define or give an example of a hypothetical construct. Explain why operational definitions are needed to define and to measure constructs.
You're considering investing in a portfolio of the common stocks of four publicly-traded companies with betas as follows:
1. a random survey of airline passengers were asked if they had ever flown before. their responses were as
a survey of 90 recently delivered women enrolled in medicaid determined that 28 of them had a history of post partum
a student survey was done to study the relationship between where students live dormitory apartment house co-op or
question university h has decided to accommodate more students this fall. knowing that typically 40 if the students
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