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Suppose that a machine produces a defective item with probability p and produces a non-defective item with probability 1 - p. Suppose further that five items produced by the machine are selected at random and inspected, and that the results (defective or non-defective) for these five items are independent. Determine the probability that at least one of the five items in the sample will be defective.
suppose iq scores were obtained from randomly selected twins. for 20 such pairs of people the linear correlation
if x1 and x2 are independent random variables x1 has a chi-square distribution with 3 degrees of freedom and x1 x2 has
The effectiveness of treating respiratory infections with herbal remedies was studied. "Days of fever" was used to measure effects. Among 356 children treated with herbal remedies, teh mean number of days with was 0.36,
eBay selling prices: For eBay auctions of the iPad2 64GB 3G Wi-Fi units, a sample was taken in July 2011 where the Buy-it-Now prices were (in dollars): Find the standard deviation of the data and the standard error of the sample mean, Interpret
how do u.s. residents who travel overseas for leisure differ from those who travel for business? the table is a
In 2004, the Internal Revenue Service received 312,226,042 individual tax returns. Of these, 12,757,005 reported an adjusted gross income of at least $100,000, and 240,128 reported at least $1 million.27 If you know that a randomly chosen return s..
Out of 1000 respondents to a survey, 250 people planned to purchase a TV of which 200 actually purchased and 50 did not actually purchase. 750 people did not plan to purchase at TV, of which 100 actually purchased and 650 did not actually purchase.
Birth weights of babies in the United States can be modeled by a normal distribution with mean 3250 grams (7.165 pounds) and standard deviation 550 grams (1.213 pounds). Those weighing less than 2500 grams (5.512 pounds) are considered to be low b..
below are three sets of expected frequencies for the four cells of 2 x 2 contingency tables.identify which statistical
What should the mean and standard deviation be if these were uniformly distributed random integers? Need to find Mean and Standard Deviation?
The Rio-River Railroad, headquartered in Santa Fe, New Mexico, is trying to devise a method for allocating fuel costs to individual railroad cars on a particular route between Denver and Santa Fe.
the probability that someone in the human population has blood type ab is about p .08 the probability that someone has
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