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An ice creaml shop found that 24% of customers buy more than one scoop per day from their shop.
If 155 customers are randomly chosen one day, what is the probability that at least 27% of them bought more than one scoop of ice cream that day?
Statistics and Probability, Statistics
Among 140 subjects with positive test? results, there are 25 false positive? results; among 152 negative? results, there are 22 false negative results. If one of the test subjects is randomly? selected, find the probabil ...
Question 1. Many high school students take the AP tests in different subject areas. In 2007, of the 144,796 students who took the biology exam 84,199 of them were female. In that same year,of the 211,693 students who too ...
XYZ company to have earnings of $3.20 per share during the fiscal year ending in one year on September 21, 2019. The firm currently plans to retain 90 percent of earnings at the end of each of the next three fiscal years ...
A survey is conducted from a population of people of whom 65?% have a college degree. The following sample data were recorded for a question asked of each person? sampled, "Do you have a college? degree?" Complete parts ...
Based on labor? statistics,17% of workers in a particular profession are female. Complete parts a through e below based on a random sample of 8 workers in this profession. a. What is the probability that exactly one work ...
1. A team of researchers have developed a new weight loss drug. They want to know if patients who use the new drug for two weeks lose any weight. The drug has some minor side effects including mild headaches and achiness ...
You are considering investing in a mutual fund. The fund is expected to earn a return of 15 percent in the next year. If its annual return is normally distributed with a standard deviation of 6.10 percent, what return ca ...
If the coefficient of determination is 0.738, what percentage of the data about the regression line is unexplained?
A study indicates that the weights of adults are normally distributed with a mean of 140 lbs and a standard deviation of 25 lbs. Find a value of weight x such that only 20% of adults weigh less than that. A. 136 B.190 ...
1) It appears that new car purchases have peaked in 2018 vs. used car purchases. The following probability distribution table shows the random variable x, where x is the number of new cars purchased by household during t ...
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Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate
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